{"id":43803,"date":"2026-08-31T19:22:22","date_gmt":"2026-08-31T19:22:22","guid":{"rendered":"https:\/\/discover.restek.com\/uncategorized\/10-critical-steps-to-world-class-reference-standards\/"},"modified":"2026-09-11T14:42:28","modified_gmt":"2026-09-11T14:42:28","slug":"10-critical-steps-to-world-class-reference-standards","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/es\/articles\/gnss1556\/10-critical-steps-to-world-class-reference-standards","title":{"rendered":"10 Critical Steps to World Class Reference Standards"},"content":{"rendered":"<style>.kb-row-layout-id43803_9cfbc8-b0 > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id43803_9cfbc8-b0 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id43803_9cfbc8-b0 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);max-width:var( --global-content-width, 1440px );padding-left:var(--global-content-edge-padding);padding-right:var(--global-content-edge-padding);padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-md, 2rem);grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id43803_9cfbc8-b0 > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id43803_9cfbc8-b0 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}@media all and (max-width: 767px){.kb-row-layout-id43803_9cfbc8-b0 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id43803_9cfbc8-b0 alignfull has-theme-palette9-background-color kt-row-has-bg wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-1-columns kt-row-layout-equal kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top kb-theme-content-width\">\n<style>.kadence-column43803_ef4f9d-a3 > .kt-inside-inner-col,.kadence-column43803_ef4f9d-a3 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column43803_ef4f9d-a3 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column43803_ef4f9d-a3 > .kt-inside-inner-col{flex-direction:column;}.kadence-column43803_ef4f9d-a3 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column43803_ef4f9d-a3 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column43803_ef4f9d-a3{position:relative;}@media all and (max-width: 1024px){.kadence-column43803_ef4f9d-a3 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column43803_ef4f9d-a3 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column43803_ef4f9d-a3\"><div class=\"kt-inside-inner-col\">\n<p class=\"wp-block-paragraph\">Here\u2019s what happens behind the scenes to ensure every ampul meets the accuracy, purity, and documentation standards your analysis depends on.<\/p>\n\n\n<style>.wp-block-kadence-column.kb-section-dir-horizontal > .kt-inside-inner-col > .kt-info-box43803_4bccbd-13 .kt-blocks-info-box-link-wrap{max-width:unset;}.kt-info-box43803_4bccbd-13 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;background:#f6f7fa;padding-top:10px;padding-right:20px;padding-bottom:10px;padding-left:20px;margin-bottom:var(--global-kb-spacing-md, 2rem);}.kt-info-box43803_4bccbd-13 .kadence-info-box-icon-container .kt-info-svg-icon, .kt-info-box43803_4bccbd-13 .kt-info-svg-icon-flip, .kt-info-box43803_4bccbd-13 .kt-blocks-info-box-number{font-size:50px;}.kt-info-box43803_4bccbd-13 .kt-blocks-info-box-media{color:#444444;background:#ffffff;border-color:#eeeeee;border-radius:200px;overflow:hidden;border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:0px;margin-right:20px;margin-bottom:0px;margin-left:0px;}.kt-info-box43803_4bccbd-13 .kt-blocks-info-box-link-wrap:hover .kt-blocks-info-box-media{color:#444444;background:#ffffff;border-color:#eeeeee;}.kt-info-box43803_4bccbd-13 .kt-infobox-textcontent h4.kt-blocks-info-box-title{font-family:Roboto;font-style:normal;font-weight:400;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:5px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box43803_4bccbd-13 .kt-infobox-textcontent .kt-blocks-info-box-text{color:#515357;}.wp-block-kadence-infobox.kt-info-box43803_4bccbd-13 .kt-blocks-info-box-text{margin-top:0px;margin-right:0px;margin-bottom:0px;}.kt-info-box43803_4bccbd-13 .kt-blocks-info-box-learnmore{color:var(--global-palette7, #EDF2F7);background:var(--global-palette1, #3182CE);border-color:var(--global-palette1, #3182CE);border-radius:3px;letter-spacing:5.3px;border-width:0px 0px 0px 0px;padding-top:4px;padding-right:8px;padding-bottom:4px;padding-left:8px;margin-top:10px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box43803_4bccbd-13 .kt-blocks-info-box-link-wrap:hover .kt-blocks-info-box-learnmore,.kt-info-box43803_4bccbd-13 .kt-blocks-info-box-link-wrap .kt-blocks-info-box-learnmore:focus{color:var(--global-palette7, #EDF2F7);background:var(--global-palette1, #3182CE);border-color:var(--global-palette1, #3182CE);}.kt-info-box43803_4bccbd-13 .kt-blocks-info-box-link-wrap{box-shadow:0px 0px 0px 0px rgba(0, 0, 0, 0);}.kt-info-box43803_4bccbd-13 .kt-blocks-info-box-link-wrap:hover{box-shadow:0px 0px 0px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 1024px){.kt-info-box43803_4bccbd-13 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);box-shadow:0px 0px 0px 0px rgba(0, 0, 0, 0);}}@media all and (max-width: 1024px){.kt-info-box43803_4bccbd-13 .kt-blocks-info-box-link-wrap:hover{box-shadow:0px 0px 0px 0px rgba(0, 0, 0, 0.2);}}@media all and (max-width: 767px){.kt-info-box43803_4bccbd-13 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);box-shadow:0px 0px 0px 0px rgba(0, 0, 0, 0);}.kt-info-box43803_4bccbd-13 .kt-blocks-info-box-link-wrap:hover{box-shadow:0px 0px 0px 0px rgba(0, 0, 0, 0.2);}}<\/style>\n<div class=\"wp-block-kadence-infobox kt-info-box43803_4bccbd-13\"><span class=\"kt-blocks-info-box-link-wrap info-box-link kt-blocks-info-box-media-align-left kt-info-halign-left\"><div class=\"kt-infobox-textcontent\"><h4 class=\"kt-blocks-info-box-title\"><strong>01<\/strong> | Review Customer &amp; Method Requirements<\/h4><p class=\"kt-blocks-info-box-text\">To determine which organic reference standards we should develop as stock products, Restek experts closely monitor government regulations and methods from around the globe and also actively engage with our customers and distributors. Once a product is chosen based on regulatory changes, customer needs, and our 35+ years of experience, a veteran Restek chemist formulates a stable standard containing an ideal mix of compounds and concentrations. All formulations are then subjected to a thorough review of accuracy, compatibility, and solubility by a second chemist.<\/p><\/div><\/span><\/div>\n\n\n<style>.wp-block-kadence-column.kb-section-dir-horizontal > .kt-inside-inner-col > .kt-info-box43803_9a71f0-45 .kt-blocks-info-box-link-wrap{max-width:unset;}.kt-info-box43803_9a71f0-45 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;background:#f6f7fa;padding-top:10px;padding-right:20px;padding-bottom:10px;padding-left:20px;margin-bottom:var(--global-kb-spacing-md, 2rem);}.kt-info-box43803_9a71f0-45 .kadence-info-box-icon-container .kt-info-svg-icon, .kt-info-box43803_9a71f0-45 .kt-info-svg-icon-flip, .kt-info-box43803_9a71f0-45 .kt-blocks-info-box-number{font-size:50px;}.kt-info-box43803_9a71f0-45 .kt-blocks-info-box-media{color:#444444;background:#ffffff;border-color:#eeeeee;border-radius:200px;overflow:hidden;border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:0px;margin-right:20px;margin-bottom:0px;margin-left:0px;}.kt-info-box43803_9a71f0-45 .kt-blocks-info-box-link-wrap:hover .kt-blocks-info-box-media{color:#444444;background:#ffffff;border-color:#eeeeee;}.kt-info-box43803_9a71f0-45 .kt-infobox-textcontent h4.kt-blocks-info-box-title{font-family:Roboto;font-style:normal;font-weight:400;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:5px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box43803_9a71f0-45 .kt-infobox-textcontent .kt-blocks-info-box-text{color:#515357;}.wp-block-kadence-infobox.kt-info-box43803_9a71f0-45 .kt-blocks-info-box-text{margin-top:0px;margin-right:0px;margin-bottom:0px;}.kt-info-box43803_9a71f0-45 .kt-blocks-info-box-learnmore{color:var(--global-palette7, #EDF2F7);background:var(--global-palette1, #3182CE);border-color:var(--global-palette1, #3182CE);border-radius:3px;border-width:0px 0px 0px 0px;padding-top:4px;padding-right:8px;padding-bottom:4px;padding-left:8px;margin-top:10px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box43803_9a71f0-45 .kt-blocks-info-box-link-wrap:hover .kt-blocks-info-box-learnmore,.kt-info-box43803_9a71f0-45 .kt-blocks-info-box-link-wrap .kt-blocks-info-box-learnmore:focus{color:var(--global-palette7, #EDF2F7);background:var(--global-palette1, #3182CE);border-color:var(--global-palette1, #3182CE);}@media all and (max-width: 1024px){.kt-info-box43803_9a71f0-45 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);}}@media all and (max-width: 767px){.kt-info-box43803_9a71f0-45 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);}}<\/style>\n<div class=\"wp-block-kadence-infobox kt-info-box43803_9a71f0-45\"><span class=\"kt-blocks-info-box-link-wrap info-box-link kt-blocks-info-box-media-align-left kt-info-halign-left\"><div class=\"kt-infobox-textcontent\"><h4 class=\"kt-blocks-info-box-title\"><strong>02<\/strong> | Verify Compatibility &amp; Stability<\/h4><p class=\"kt-blocks-info-box-text\">All raw materials used in our reference standards are held to strict purity criteria, and compound compatibility is scrutinized during both formulation and review. We also conduct ongoing, long-term stability and short-term shipping stability studies in accordance with ISO 17034 and ISO Guide 35 to ensure reliability and accurate shelf-life reporting\u2014at least 95% of our products provide a 12-month shelf life or longer.<\/p><\/div><\/span><\/div>\n\n\n<style>.wp-block-kadence-column.kb-section-dir-horizontal > .kt-inside-inner-col > .kt-info-box43803_a21e91-45 .kt-blocks-info-box-link-wrap{max-width:unset;}.kt-info-box43803_a21e91-45 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;background:#f6f7fa;padding-top:10px;padding-right:20px;padding-bottom:10px;padding-left:20px;margin-bottom:var(--global-kb-spacing-md, 2rem);}.kt-info-box43803_a21e91-45 .kadence-info-box-icon-container .kt-info-svg-icon, .kt-info-box43803_a21e91-45 .kt-info-svg-icon-flip, .kt-info-box43803_a21e91-45 .kt-blocks-info-box-number{font-size:50px;}.kt-info-box43803_a21e91-45 .kt-blocks-info-box-media{color:#444444;background:#ffffff;border-color:#eeeeee;border-radius:200px;overflow:hidden;border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:0px;margin-right:20px;margin-bottom:0px;margin-left:0px;}.kt-info-box43803_a21e91-45 .kt-blocks-info-box-link-wrap:hover .kt-blocks-info-box-media{color:#444444;background:#ffffff;border-color:#eeeeee;}.kt-info-box43803_a21e91-45 .kt-infobox-textcontent h4.kt-blocks-info-box-title{font-family:Roboto;font-style:normal;font-weight:400;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:5px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box43803_a21e91-45 .kt-infobox-textcontent .kt-blocks-info-box-text{color:#515357;}.wp-block-kadence-infobox.kt-info-box43803_a21e91-45 .kt-blocks-info-box-text{margin-top:0px;margin-right:0px;margin-bottom:0px;}.kt-info-box43803_a21e91-45 .kt-blocks-info-box-learnmore{color:var(--global-palette7, #EDF2F7);background:var(--global-palette1, #3182CE);border-color:var(--global-palette1, #3182CE);border-radius:3px;border-width:0px 0px 0px 0px;padding-top:4px;padding-right:8px;padding-bottom:4px;padding-left:8px;margin-top:10px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box43803_a21e91-45 .kt-blocks-info-box-link-wrap:hover .kt-blocks-info-box-learnmore,.kt-info-box43803_a21e91-45 .kt-blocks-info-box-link-wrap .kt-blocks-info-box-learnmore:focus{color:var(--global-palette7, #EDF2F7);background:var(--global-palette1, #3182CE);border-color:var(--global-palette1, #3182CE);}@media all and (max-width: 1024px){.kt-info-box43803_a21e91-45 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);}}@media all and (max-width: 767px){.kt-info-box43803_a21e91-45 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);}}<\/style>\n<div class=\"wp-block-kadence-infobox kt-info-box43803_a21e91-45\"><span class=\"kt-blocks-info-box-link-wrap info-box-link kt-blocks-info-box-media-align-left kt-info-halign-left\"><div class=\"kt-infobox-textcontent\"><h4 class=\"kt-blocks-info-box-title\"><strong>03<\/strong> | Characterize Raw Materials Thoroughly<\/h4><p class=\"kt-blocks-info-box-text\">Restek\u2019s Quality Control (QC) lab confirms the chemical identity and purity of mixture components and solvents using two or more of the following techniques: GC-FID, HPLC, GC-ECD, GC-MS, LC-MS, refractive index, and melting point.<\/p><\/div><\/span><\/div>\n\n\n<style>.wp-block-kadence-column.kb-section-dir-horizontal > .kt-inside-inner-col > .kt-info-box43803_35df6a-d8 .kt-blocks-info-box-link-wrap{max-width:unset;}.kt-info-box43803_35df6a-d8 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;background:#f6f7fa;padding-top:10px;padding-right:20px;padding-bottom:10px;padding-left:20px;margin-bottom:var(--global-kb-spacing-md, 2rem);}.kt-info-box43803_35df6a-d8 .kadence-info-box-icon-container .kt-info-svg-icon, .kt-info-box43803_35df6a-d8 .kt-info-svg-icon-flip, .kt-info-box43803_35df6a-d8 .kt-blocks-info-box-number{font-size:50px;}.kt-info-box43803_35df6a-d8 .kt-blocks-info-box-media{color:#444444;background:#ffffff;border-color:#eeeeee;border-radius:200px;overflow:hidden;border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:0px;margin-right:20px;margin-bottom:0px;margin-left:0px;}.kt-info-box43803_35df6a-d8 .kt-blocks-info-box-link-wrap:hover .kt-blocks-info-box-media{color:#444444;background:#ffffff;border-color:#eeeeee;}.kt-info-box43803_35df6a-d8 .kt-infobox-textcontent h4.kt-blocks-info-box-title{font-family:Roboto;font-style:normal;font-weight:400;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:5px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box43803_35df6a-d8 .kt-infobox-textcontent .kt-blocks-info-box-text{color:#515357;}.wp-block-kadence-infobox.kt-info-box43803_35df6a-d8 .kt-blocks-info-box-text{margin-top:0px;margin-right:0px;margin-bottom:0px;}.kt-info-box43803_35df6a-d8 .kt-blocks-info-box-learnmore{color:var(--global-palette7, #EDF2F7);background:var(--global-palette1, #3182CE);border-color:var(--global-palette1, #3182CE);border-radius:3px;border-width:0px 0px 0px 0px;padding-top:4px;padding-right:8px;padding-bottom:4px;padding-left:8px;margin-top:10px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box43803_35df6a-d8 .kt-blocks-info-box-link-wrap:hover .kt-blocks-info-box-learnmore,.kt-info-box43803_35df6a-d8 .kt-blocks-info-box-link-wrap .kt-blocks-info-box-learnmore:focus{color:var(--global-palette7, #EDF2F7);background:var(--global-palette1, #3182CE);border-color:var(--global-palette1, #3182CE);}@media all and (max-width: 1024px){.kt-info-box43803_35df6a-d8 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);}}@media all and (max-width: 767px){.kt-info-box43803_35df6a-d8 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);}}<\/style>\n<div class=\"wp-block-kadence-infobox kt-info-box43803_35df6a-d8\"><span class=\"kt-blocks-info-box-link-wrap info-box-link kt-blocks-info-box-media-align-left kt-info-halign-left\"><div class=\"kt-infobox-textcontent\"><h4 class=\"kt-blocks-info-box-title\"><strong>04<\/strong> | Calibrate Analytical Balances<\/h4><p class=\"kt-blocks-info-box-text\">All analytical balances are verified at seven mass levels daily using NIST* traceable weights and are also calibrated yearly by an ISO\/IEC 17025-accredited provider to guarantee accurate measurement.<br><em>*National Institute of Standards and Technology<\/em><\/p><\/div><\/span><\/div>\n\n\n<style>.wp-block-kadence-column.kb-section-dir-horizontal > .kt-inside-inner-col > .kt-info-box43803_a17bfc-19 .kt-blocks-info-box-link-wrap{max-width:unset;}.kt-info-box43803_a17bfc-19 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;background:#f6f7fa;padding-top:10px;padding-right:20px;padding-bottom:10px;padding-left:20px;margin-bottom:var(--global-kb-spacing-md, 2rem);}.kt-info-box43803_a17bfc-19 .kadence-info-box-icon-container .kt-info-svg-icon, .kt-info-box43803_a17bfc-19 .kt-info-svg-icon-flip, .kt-info-box43803_a17bfc-19 .kt-blocks-info-box-number{font-size:50px;}.kt-info-box43803_a17bfc-19 .kt-blocks-info-box-media{color:#444444;background:#ffffff;border-color:#eeeeee;border-radius:200px;overflow:hidden;border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:0px;margin-right:20px;margin-bottom:0px;margin-left:0px;}.kt-info-box43803_a17bfc-19 .kt-blocks-info-box-link-wrap:hover .kt-blocks-info-box-media{color:#444444;background:#ffffff;border-color:#eeeeee;}.kt-info-box43803_a17bfc-19 .kt-infobox-textcontent h4.kt-blocks-info-box-title{font-family:Roboto;font-style:normal;font-weight:400;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:5px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box43803_a17bfc-19 .kt-infobox-textcontent .kt-blocks-info-box-text{color:#515357;}.wp-block-kadence-infobox.kt-info-box43803_a17bfc-19 .kt-blocks-info-box-text{margin-top:0px;margin-right:0px;margin-bottom:0px;}.kt-info-box43803_a17bfc-19 .kt-blocks-info-box-learnmore{color:var(--global-palette7, #EDF2F7);background:var(--global-palette1, #3182CE);border-color:var(--global-palette1, #3182CE);border-radius:3px;border-width:0px 0px 0px 0px;padding-top:4px;padding-right:8px;padding-bottom:4px;padding-left:8px;margin-top:10px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box43803_a17bfc-19 .kt-blocks-info-box-link-wrap:hover .kt-blocks-info-box-learnmore,.kt-info-box43803_a17bfc-19 .kt-blocks-info-box-link-wrap .kt-blocks-info-box-learnmore:focus{color:var(--global-palette7, #EDF2F7);background:var(--global-palette1, #3182CE);border-color:var(--global-palette1, #3182CE);}@media all and (max-width: 1024px){.kt-info-box43803_a17bfc-19 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);}}@media all and (max-width: 767px){.kt-info-box43803_a17bfc-19 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);}}<\/style>\n<div class=\"wp-block-kadence-infobox kt-info-box43803_a17bfc-19\"><span class=\"kt-blocks-info-box-link-wrap info-box-link kt-blocks-info-box-media-align-left kt-info-halign-left\"><div class=\"kt-infobox-textcontent\"><h4 class=\"kt-blocks-info-box-title\"><strong>05<\/strong> | Proprietary Deactivation of Glassware &amp; Ampuls<\/h4><p class=\"kt-blocks-info-box-text\">Restek reference standards are prepared using Class A volumetric flasks and\/or Class A pipettes. Ampuls and vials used in preparation and packaging undergo Restek&#8217;s proprietary deactivation process to prevent the loss of target analytes.<\/p><\/div><\/span><\/div>\n\n\n<style>.wp-block-kadence-column.kb-section-dir-horizontal > .kt-inside-inner-col > .kt-info-box43803_a2f75e-c8 .kt-blocks-info-box-link-wrap{max-width:unset;}.kt-info-box43803_a2f75e-c8 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;background:#f6f7fa;padding-top:10px;padding-right:20px;padding-bottom:10px;padding-left:20px;margin-bottom:var(--global-kb-spacing-md, 2rem);}.kt-info-box43803_a2f75e-c8 .kadence-info-box-icon-container .kt-info-svg-icon, .kt-info-box43803_a2f75e-c8 .kt-info-svg-icon-flip, .kt-info-box43803_a2f75e-c8 .kt-blocks-info-box-number{font-size:50px;}.kt-info-box43803_a2f75e-c8 .kt-blocks-info-box-media{color:#444444;background:#ffffff;border-color:#eeeeee;border-radius:200px;overflow:hidden;border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:0px;margin-right:20px;margin-bottom:0px;margin-left:0px;}.kt-info-box43803_a2f75e-c8 .kt-blocks-info-box-link-wrap:hover .kt-blocks-info-box-media{color:#444444;background:#ffffff;border-color:#eeeeee;}.kt-info-box43803_a2f75e-c8 .kt-infobox-textcontent h4.kt-blocks-info-box-title{font-family:Roboto;font-style:normal;font-weight:400;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:5px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box43803_a2f75e-c8 .kt-infobox-textcontent .kt-blocks-info-box-text{color:#515357;}.wp-block-kadence-infobox.kt-info-box43803_a2f75e-c8 .kt-blocks-info-box-text{margin-top:0px;margin-right:0px;margin-bottom:0px;}.kt-info-box43803_a2f75e-c8 .kt-blocks-info-box-learnmore{color:var(--global-palette7, #EDF2F7);background:var(--global-palette1, #3182CE);border-color:var(--global-palette1, #3182CE);border-radius:3px;border-width:0px 0px 0px 0px;padding-top:4px;padding-right:8px;padding-bottom:4px;padding-left:8px;margin-top:10px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box43803_a2f75e-c8 .kt-blocks-info-box-link-wrap:hover .kt-blocks-info-box-learnmore,.kt-info-box43803_a2f75e-c8 .kt-blocks-info-box-link-wrap .kt-blocks-info-box-learnmore:focus{color:var(--global-palette7, #EDF2F7);background:var(--global-palette1, #3182CE);border-color:var(--global-palette1, #3182CE);}@media all and (max-width: 1024px){.kt-info-box43803_a2f75e-c8 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);}}@media all and (max-width: 767px){.kt-info-box43803_a2f75e-c8 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);}}<\/style>\n<div class=\"wp-block-kadence-infobox kt-info-box43803_a2f75e-c8\"><span class=\"kt-blocks-info-box-link-wrap info-box-link kt-blocks-info-box-media-align-left kt-info-halign-left\"><div class=\"kt-infobox-textcontent\"><h4 class=\"kt-blocks-info-box-title\"><strong>06<\/strong> | Maintain ISO Accreditation<\/h4><p class=\"kt-blocks-info-box-text\">The reference standard manufacturing and QC testing laboratories in Restek\u2019s state-of-the-art Bellefonte, PA, facility feature ISO 17034 and ISO\/IEC 17025 accreditation. These accreditations\u2014in addition to ISO 9001 registration, which we have maintained since 1994\u2014serve as recognition that Restek and our labs meet the world-class quality standards established by the International Organization for Standardization (ISO). On-site manufacturing as well as raw material, qualitative, and quantitative analyses are completed in these ISO-accredited labs, including a dedicated facility for PFAS standards manufactured to 99.8% purity.&nbsp;<em>Restek\u2019s ISO-accredited labs offer a full line of both stock and custom CRMs.&nbsp;<\/em><br><br>Learn more at&nbsp;<a href=\"https:\/\/www.restek.com\/iso\" target=\"_blank\" rel=\"noreferrer noopener\">www.restek.com\/iso<\/a><br><br><\/p><\/div><\/span><\/div>\n\n\n<style>.wp-block-kadence-column.kb-section-dir-horizontal > .kt-inside-inner-col > .kt-info-box43803_78970c-45 .kt-blocks-info-box-link-wrap{max-width:unset;}.kt-info-box43803_78970c-45 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;background:#f6f7fa;padding-top:10px;padding-right:20px;padding-bottom:10px;padding-left:20px;margin-bottom:var(--global-kb-spacing-md, 2rem);}.kt-info-box43803_78970c-45 .kadence-info-box-icon-container .kt-info-svg-icon, .kt-info-box43803_78970c-45 .kt-info-svg-icon-flip, .kt-info-box43803_78970c-45 .kt-blocks-info-box-number{font-size:50px;}.kt-info-box43803_78970c-45 .kt-blocks-info-box-media{color:#444444;background:#ffffff;border-color:#eeeeee;border-radius:200px;overflow:hidden;border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:0px;margin-right:20px;margin-bottom:0px;margin-left:0px;}.kt-info-box43803_78970c-45 .kt-blocks-info-box-link-wrap:hover .kt-blocks-info-box-media{color:#444444;background:#ffffff;border-color:#eeeeee;}.kt-info-box43803_78970c-45 .kt-infobox-textcontent h4.kt-blocks-info-box-title{font-family:Roboto;font-style:normal;font-weight:400;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:5px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box43803_78970c-45 .kt-infobox-textcontent .kt-blocks-info-box-text{color:#515357;}.wp-block-kadence-infobox.kt-info-box43803_78970c-45 .kt-blocks-info-box-text{margin-top:0px;margin-right:0px;margin-bottom:0px;}.kt-info-box43803_78970c-45 .kt-blocks-info-box-learnmore{color:var(--global-palette7, #EDF2F7);background:var(--global-palette1, #3182CE);border-color:var(--global-palette1, #3182CE);border-radius:3px;border-width:0px 0px 0px 0px;padding-top:4px;padding-right:8px;padding-bottom:4px;padding-left:8px;margin-top:20px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box43803_78970c-45 .kt-blocks-info-box-link-wrap:hover .kt-blocks-info-box-learnmore,.kt-info-box43803_78970c-45 .kt-blocks-info-box-link-wrap .kt-blocks-info-box-learnmore:focus{color:var(--global-palette7, #EDF2F7);background:var(--global-palette1, #3182CE);border-color:var(--global-palette1, #3182CE);}@media all and (max-width: 1024px){.kt-info-box43803_78970c-45 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);}}@media all and (max-width: 767px){.kt-info-box43803_78970c-45 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);}}<\/style>\n<div class=\"wp-block-kadence-infobox kt-info-box43803_78970c-45\"><span class=\"kt-blocks-info-box-link-wrap info-box-link kt-blocks-info-box-media-align-left kt-info-halign-left\"><div class=\"kt-infobox-textcontent\"><h4 class=\"kt-blocks-info-box-title\"><strong>07<\/strong> | Offer a Variety of Documentation<\/h4><p class=\"kt-blocks-info-box-text\">Restek exclusively offers three levels of fully ISO-compliant documentation for our reference standards, and most stock standards come with Certificate of Analysis\u2013Chromatographic Plus documentation.<br><br><strong>Certificate of Analysis \u2013 Gravimetric&nbsp;<\/strong>includes all raw material information, lot numbers and purity, isomer ratios for isomeric compounds, and calculated concentration(s). Associated uncertainties are also included for certified reference materials (CRMs).<br><br><strong>Certificate of Analysis \u2013 Chromatographic&nbsp;<\/strong>includes all raw material information, lot numbers and purity, isomer ratios for isomeric compounds, and calculated concentration(s). Associated uncertainties are also included for certified reference materials (CRMs).\u202fAdditionally, a single sample is withdrawn from the packaged units and is tested via an appropriate technique to verify mixture composition.\u202fA chromatogram of the analyzed standard, with each peak identified, is included on the certificate.<br><br><strong>Certificate of Analysis \u2013 Chromatographic Plus&nbsp;<\/strong>includes all raw material information, lot numbers and purity, isomer ratios for isomeric compounds, and calculated concentration(s). Associated uncertainties are also included for certified reference materials (CRMs).\u202fAdditionally, a sample of the packaged units is analyzed in triplicate, and the peak areas are statistically compared to a second lot which is either a previous lot (if available) or a freshly produced independent second lot.\u202fA chromatogram of the analyzed standard, with each peak identified, is included on the certificate.\u202fPlus, a detailed data pack containing the product certificate, all quantitative assay data and statistics, and the Reference Material Batch Record are available at&nbsp;<a href=\"https:\/\/www.restek.com\/documentation\" target=\"_blank\" rel=\"noreferrer noopener\">www.restek.com\/documentation<\/a>.<\/p><\/div><\/span><\/div>\n\n\n<style>.wp-block-kadence-column.kb-section-dir-horizontal > .kt-inside-inner-col > .kt-info-box43803_1e4849-17 .kt-blocks-info-box-link-wrap{max-width:unset;}.kt-info-box43803_1e4849-17 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;background:#f6f7fa;padding-top:10px;padding-right:20px;padding-bottom:10px;padding-left:20px;margin-bottom:var(--global-kb-spacing-md, 2rem);}.kt-info-box43803_1e4849-17 .kadence-info-box-icon-container .kt-info-svg-icon, .kt-info-box43803_1e4849-17 .kt-info-svg-icon-flip, .kt-info-box43803_1e4849-17 .kt-blocks-info-box-number{font-size:50px;}.kt-info-box43803_1e4849-17 .kt-blocks-info-box-media{color:#444444;background:#ffffff;border-color:#eeeeee;border-radius:200px;overflow:hidden;border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:0px;margin-right:20px;margin-bottom:0px;margin-left:0px;}.kt-info-box43803_1e4849-17 .kt-blocks-info-box-link-wrap:hover .kt-blocks-info-box-media{color:#444444;background:#ffffff;border-color:#eeeeee;}.kt-info-box43803_1e4849-17 .kt-infobox-textcontent h4.kt-blocks-info-box-title{font-family:Roboto;font-style:normal;font-weight:400;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:5px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box43803_1e4849-17 .kt-infobox-textcontent .kt-blocks-info-box-text{color:#515357;}.wp-block-kadence-infobox.kt-info-box43803_1e4849-17 .kt-blocks-info-box-text{margin-top:0px;margin-right:0px;margin-bottom:0px;}.kt-info-box43803_1e4849-17 .kt-blocks-info-box-learnmore{color:var(--global-palette7, #EDF2F7);background:var(--global-palette1, #3182CE);border-color:var(--global-palette1, #3182CE);border-radius:3px;border-width:0px 0px 0px 0px;padding-top:4px;padding-right:8px;padding-bottom:4px;padding-left:8px;margin-top:10px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box43803_1e4849-17 .kt-blocks-info-box-link-wrap:hover .kt-blocks-info-box-learnmore,.kt-info-box43803_1e4849-17 .kt-blocks-info-box-link-wrap .kt-blocks-info-box-learnmore:focus{color:var(--global-palette7, #EDF2F7);background:var(--global-palette1, #3182CE);border-color:var(--global-palette1, #3182CE);}@media all and (max-width: 1024px){.kt-info-box43803_1e4849-17 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);}}@media all and (max-width: 767px){.kt-info-box43803_1e4849-17 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);}}<\/style>\n<div class=\"wp-block-kadence-infobox kt-info-box43803_1e4849-17\"><span class=\"kt-blocks-info-box-link-wrap info-box-link kt-blocks-info-box-media-align-left kt-info-halign-left\"><div class=\"kt-infobox-textcontent\"><h4 class=\"kt-blocks-info-box-title\"><strong>08<\/strong> | Package Securely &amp; Label Clearly<\/h4><p class=\"kt-blocks-info-box-text\">Every Restek standard is placed in compact, durable, and environmentally friendly packaging for dock-to-door protection. Provided notebook and vial labels provide critical storage, safety, and shelf-life information in an easy-to-read format for added safety and GHS compliance. QR codes on the ampul storage tube give you instant access to the certificate of analysis for&nbsp;<em>your<\/em>&nbsp;specific standard and lot # on Restek.com.<\/p><\/div><\/span><\/div>\n\n\n<style>.wp-block-kadence-column.kb-section-dir-horizontal > .kt-inside-inner-col > .kt-info-box43803_dccb21-73 .kt-blocks-info-box-link-wrap{max-width:unset;}.kt-info-box43803_dccb21-73 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;background:#f6f7fa;padding-top:10px;padding-right:20px;padding-bottom:10px;padding-left:20px;margin-bottom:var(--global-kb-spacing-md, 2rem);}.kt-info-box43803_dccb21-73 .kadence-info-box-icon-container .kt-info-svg-icon, .kt-info-box43803_dccb21-73 .kt-info-svg-icon-flip, .kt-info-box43803_dccb21-73 .kt-blocks-info-box-number{font-size:50px;}.kt-info-box43803_dccb21-73 .kt-blocks-info-box-media{color:#444444;background:#ffffff;border-color:#eeeeee;border-radius:200px;overflow:hidden;border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:0px;margin-right:20px;margin-bottom:0px;margin-left:0px;}.kt-info-box43803_dccb21-73 .kt-blocks-info-box-link-wrap:hover .kt-blocks-info-box-media{color:#444444;background:#ffffff;border-color:#eeeeee;}.kt-info-box43803_dccb21-73 .kt-infobox-textcontent h4.kt-blocks-info-box-title{font-family:Roboto;font-style:normal;font-weight:400;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:5px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box43803_dccb21-73 .kt-infobox-textcontent .kt-blocks-info-box-text{color:#515357;}.wp-block-kadence-infobox.kt-info-box43803_dccb21-73 .kt-blocks-info-box-text{margin-top:0px;margin-right:0px;margin-bottom:0px;}.kt-info-box43803_dccb21-73 .kt-blocks-info-box-learnmore{color:var(--global-palette7, #EDF2F7);background:var(--global-palette1, #3182CE);border-color:var(--global-palette1, #3182CE);border-radius:3px;border-width:0px 0px 0px 0px;padding-top:4px;padding-right:8px;padding-bottom:4px;padding-left:8px;margin-top:10px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box43803_dccb21-73 .kt-blocks-info-box-link-wrap:hover .kt-blocks-info-box-learnmore,.kt-info-box43803_dccb21-73 .kt-blocks-info-box-link-wrap .kt-blocks-info-box-learnmore:focus{color:var(--global-palette7, #EDF2F7);background:var(--global-palette1, #3182CE);border-color:var(--global-palette1, #3182CE);}@media all and (max-width: 1024px){.kt-info-box43803_dccb21-73 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);}}@media all and (max-width: 767px){.kt-info-box43803_dccb21-73 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);}}<\/style>\n<div class=\"wp-block-kadence-infobox kt-info-box43803_dccb21-73\"><span class=\"kt-blocks-info-box-link-wrap info-box-link kt-blocks-info-box-media-align-left kt-info-halign-left\"><div class=\"kt-infobox-textcontent\"><h4 class=\"kt-blocks-info-box-title\"><strong>09<\/strong> | Convenience and Safety Included with Each Ampul<\/h4><p class=\"kt-blocks-info-box-text\">As an added bonus, we include a deactivated screw-top vial (<a href=\"https:\/\/www.restek.com\/p\/24640\" target=\"_blank\" rel=\"noreferrer noopener\">cat.# 24640<\/a>) with each stock reference standard &lt;5 mL for worry-free transfer. Every order also includes a free Restek Safe Cracker.<\/p><\/div><\/span><\/div>\n\n\n<style>.wp-block-kadence-column.kb-section-dir-horizontal > .kt-inside-inner-col > .kt-info-box43803_13959c-63 .kt-blocks-info-box-link-wrap{max-width:unset;}.kt-info-box43803_13959c-63 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;background:#f6f7fa;padding-top:10px;padding-right:20px;padding-bottom:10px;padding-left:20px;margin-bottom:var(--global-kb-spacing-md, 2rem);}.kt-info-box43803_13959c-63 .kadence-info-box-icon-container .kt-info-svg-icon, .kt-info-box43803_13959c-63 .kt-info-svg-icon-flip, .kt-info-box43803_13959c-63 .kt-blocks-info-box-number{font-size:50px;}.kt-info-box43803_13959c-63 .kt-blocks-info-box-media{color:#444444;background:#ffffff;border-color:#eeeeee;border-radius:200px;overflow:hidden;border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:0px;margin-right:20px;margin-bottom:0px;margin-left:0px;}.kt-info-box43803_13959c-63 .kt-blocks-info-box-link-wrap:hover .kt-blocks-info-box-media{color:#444444;background:#ffffff;border-color:#eeeeee;}.kt-info-box43803_13959c-63 .kt-infobox-textcontent h4.kt-blocks-info-box-title{font-family:Roboto;font-style:normal;font-weight:400;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:5px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box43803_13959c-63 .kt-infobox-textcontent .kt-blocks-info-box-text{color:#515357;}.wp-block-kadence-infobox.kt-info-box43803_13959c-63 .kt-blocks-info-box-text{margin-top:0px;margin-right:0px;margin-bottom:0px;}.kt-info-box43803_13959c-63 .kt-blocks-info-box-learnmore{color:var(--global-palette7, #EDF2F7);background:var(--global-palette1, #3182CE);border-color:var(--global-palette1, #3182CE);border-radius:3px;border-width:0px 0px 0px 0px;padding-top:4px;padding-right:8px;padding-bottom:4px;padding-left:8px;margin-top:10px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box43803_13959c-63 .kt-blocks-info-box-link-wrap:hover .kt-blocks-info-box-learnmore,.kt-info-box43803_13959c-63 .kt-blocks-info-box-link-wrap .kt-blocks-info-box-learnmore:focus{color:var(--global-palette7, #EDF2F7);background:var(--global-palette1, #3182CE);border-color:var(--global-palette1, #3182CE);}@media all and (max-width: 1024px){.kt-info-box43803_13959c-63 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);}}@media all and (max-width: 767px){.kt-info-box43803_13959c-63 .kt-blocks-info-box-link-wrap{border-top:1px solid var(--global-palette8, #F7FAFC);border-right:1px solid var(--global-palette8, #F7FAFC);border-bottom:1px solid var(--global-palette8, #F7FAFC);border-left:1px solid var(--global-palette8, #F7FAFC);}}<\/style>\n<div class=\"wp-block-kadence-infobox kt-info-box43803_13959c-63\"><span class=\"kt-blocks-info-box-link-wrap info-box-link kt-blocks-info-box-media-align-left kt-info-halign-left\"><div class=\"kt-infobox-textcontent\"><h4 class=\"kt-blocks-info-box-title\"><strong>10<\/strong> | Manage Warehouse Inventory<\/h4><p class=\"kt-blocks-info-box-text\">To ensure the inventory is available when it\u2019s needed, Restek continually analyzes and maintains inventory of more than 1200 catalog standards and multiple lots of the most commonly requested calibration standards\u2014as well as more than 6300 neat compounds. We pull inventory months before its expiration date to eliminate inadvertent delivery of expired or nearly expired reference standards.<\/p><\/div><\/span><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"222\" src=\"https:\/\/discover.restek.com\/wp-content\/uploads\/figure-article-GNSS1556E-01.jpg\" alt=\"\" class=\"wp-image-22966\" style=\"width:208px;height:auto\" title=\"-\" srcset=\"https:\/\/discover.restek.com\/wp-content\/uploads\/figure-article-GNSS1556E-01.jpg 400w, https:\/\/discover.restek.com\/wp-content\/uploads\/figure-article-GNSS1556E-01-300x167.jpg 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/figure>\n<\/div><\/div><\/div>\n\n<\/div><\/div>\n\n<style>.wp-block-kadence-advancedbtn.kb-btns43803_7729f5-29{gap:var(--global-kb-gap-xs, 0.5rem );justify-content:center;align-items:center;}.kt-btns43803_7729f5-29 .kt-button{font-weight:normal;font-style:normal;}.kt-btns43803_7729f5-29 .kt-btn-wrap-0{margin-right:5px;}.wp-block-kadence-advancedbtn.kt-btns43803_7729f5-29 .kt-btn-wrap-0 .kt-button{color:#555555;border-color:#555555;}.wp-block-kadence-advancedbtn.kt-btns43803_7729f5-29 .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns43803_7729f5-29 .kt-btn-wrap-0 .kt-button:focus{color:#ffffff;border-color:#444444;}.wp-block-kadence-advancedbtn.kt-btns43803_7729f5-29 .kt-btn-wrap-0 .kt-button::before{display:none;}.wp-block-kadence-advancedbtn.kt-btns43803_7729f5-29 .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns43803_7729f5-29 .kt-btn-wrap-0 .kt-button:focus{background:#444444;}<\/style>\n<div class=\"wp-block-kadence-advancedbtn kb-buttons-wrap kb-btns43803_7729f5-29\"><style>ul.menu .wp-block-kadence-advancedbtn .kb-btn43803_4d894e-d0.kb-button{width:initial;}.wp-block-kadence-advancedbtn .kb-btn43803_4d894e-d0.kb-button{color:var(--global-palette9, #ffffff);background:#ff9a00;border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-right-radius:8px;border-bottom-left-radius:8px;border-top-color:#ff9a00;border-top-style:solid;border-right-color:#ff9a00;border-right-style:solid;border-bottom-color:#ff9a00;border-bottom-style:solid;border-left-color:#ff9a00;border-left-style:solid;}.wp-block-kadence-advancedbtn .kb-btn43803_4d894e-d0.kb-button:not(.specificity):not(.extra-specificity){text-decoration:none;}.kb-btn43803_4d894e-d0.kb-button .kb-svg-icon-wrap{color:var(--global-palette9, #ffffff);}.kb-btn43803_4d894e-d0.kb-button:hover .kb-svg-icon-wrap, .kb-btn43803_4d894e-d0.kb-button:focus .kb-svg-icon-wrap{color:var(--global-palette9, #ffffff);}.wp-block-kadence-advancedbtn .kb-btn43803_4d894e-d0.kb-button:hover, .wp-block-kadence-advancedbtn .kb-btn43803_4d894e-d0.kb-button:focus{color:var(--global-palette9, #ffffff);background:#f37c20;}@media all and (max-width: 1024px){.wp-block-kadence-advancedbtn .kb-btn43803_4d894e-d0.kb-button{border-top-color:#ff9a00;border-top-style:solid;border-right-color:#ff9a00;border-right-style:solid;border-bottom-color:#ff9a00;border-bottom-style:solid;border-left-color:#ff9a00;border-left-style:solid;}}@media all and (max-width: 767px){.wp-block-kadence-advancedbtn .kb-btn43803_4d894e-d0.kb-button{border-top-color:#ff9a00;border-top-style:solid;border-right-color:#ff9a00;border-right-style:solid;border-bottom-color:#ff9a00;border-bottom-style:solid;border-left-color:#ff9a00;border-left-style:solid;}}<\/style><a class=\"kb-button kt-button button kb-btn43803_4d894e-d0 kt-btn-size-standard kt-btn-width-type-auto kb-btn-global-fill kt-btn-has-text-true kt-btn-has-svg-false wp-block-kadence-singlebtn\" href=\"https:\/\/www.restek.com\/standards\" target=\"_blank\" rel=\"noopener\"><span class=\"kt-btn-inner-text\"><strong>Browse our Reference Standards Inventory<\/strong><\/span><\/a><\/div>\n\n\n\n<div style=\"height:32px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<style>.wp-block-kadence-advancedbtn.kb-btns43803_cf0edd-58{gap:var(--global-kb-gap-xs, 0.5rem );justify-content:center;align-items:center;}.kt-btns43803_cf0edd-58 .kt-button{font-weight:normal;font-style:normal;}.kt-btns43803_cf0edd-58 .kt-btn-wrap-0{margin-right:5px;}.wp-block-kadence-advancedbtn.kt-btns43803_cf0edd-58 .kt-btn-wrap-0 .kt-button{color:#555555;border-color:#555555;}.wp-block-kadence-advancedbtn.kt-btns43803_cf0edd-58 .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns43803_cf0edd-58 .kt-btn-wrap-0 .kt-button:focus{color:#ffffff;border-color:#444444;}.wp-block-kadence-advancedbtn.kt-btns43803_cf0edd-58 .kt-btn-wrap-0 .kt-button::before{display:none;}.wp-block-kadence-advancedbtn.kt-btns43803_cf0edd-58 .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns43803_cf0edd-58 .kt-btn-wrap-0 .kt-button:focus{background:#444444;}<\/style>\n<div class=\"wp-block-kadence-advancedbtn kb-buttons-wrap kb-btns43803_cf0edd-58\"><style>ul.menu .wp-block-kadence-advancedbtn .kb-btn43803_a2abd2-cc.kb-button{width:initial;}.wp-block-kadence-advancedbtn .kb-btn43803_a2abd2-cc.kb-button{color:var(--global-palette9, #ffffff);background:#ff9a00;border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-right-radius:8px;border-bottom-left-radius:8px;border-top-color:#ff9a00;border-top-style:solid;border-right-color:#ff9a00;border-right-style:solid;border-bottom-color:#ff9a00;border-bottom-style:solid;border-left-color:#ff9a00;border-left-style:solid;}.wp-block-kadence-advancedbtn .kb-btn43803_a2abd2-cc.kb-button:not(.specificity):not(.extra-specificity){text-decoration:none;}.kb-btn43803_a2abd2-cc.kb-button .kb-svg-icon-wrap{color:var(--global-palette9, #ffffff);}.kb-btn43803_a2abd2-cc.kb-button:hover .kb-svg-icon-wrap, .kb-btn43803_a2abd2-cc.kb-button:focus .kb-svg-icon-wrap{color:var(--global-palette9, #ffffff);}.wp-block-kadence-advancedbtn .kb-btn43803_a2abd2-cc.kb-button:hover, .wp-block-kadence-advancedbtn .kb-btn43803_a2abd2-cc.kb-button:focus{color:var(--global-palette9, #ffffff);background:#f37c20;}@media all and (max-width: 1024px){.wp-block-kadence-advancedbtn .kb-btn43803_a2abd2-cc.kb-button{border-top-color:#ff9a00;border-top-style:solid;border-right-color:#ff9a00;border-right-style:solid;border-bottom-color:#ff9a00;border-bottom-style:solid;border-left-color:#ff9a00;border-left-style:solid;}}@media all and (max-width: 767px){.wp-block-kadence-advancedbtn .kb-btn43803_a2abd2-cc.kb-button{border-top-color:#ff9a00;border-top-style:solid;border-right-color:#ff9a00;border-right-style:solid;border-bottom-color:#ff9a00;border-bottom-style:solid;border-left-color:#ff9a00;border-left-style:solid;}}<\/style><a class=\"kb-button kt-button button kb-btn43803_a2abd2-cc kt-btn-size-standard kt-btn-width-type-auto kb-btn-global-fill kt-btn-has-text-true kt-btn-has-svg-false wp-block-kadence-singlebtn\" href=\"https:\/\/discover.restek.com\/referencestandards\" target=\"_blank\" rel=\"noreferrer noopener\"><span class=\"kt-btn-inner-text\"><strong><em>Want the full picture?  <\/em>Visit the Reference Standards Hub<\/strong><\/span><\/a><\/div>\n\n\n\n<div style=\"height:64px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div id=\"faq\" class=\"wp-block-group hub-fullwidth-container resource-hub-section has-background\" style=\"background-color:#f3f4f8\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><style>.kadence-column43803_afeb97-65 > .kt-inside-inner-col{display:flex;}.kadence-column43803_afeb97-65 > .kt-inside-inner-col,.kadence-column43803_afeb97-65 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column43803_afeb97-65 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column43803_afeb97-65 > .kt-inside-inner-col{flex-direction:column;align-items:stretch;}.kadence-column43803_afeb97-65 > .kt-inside-inner-col > .kb-image-is-ratio-size{align-self:stretch;}.kadence-column43803_afeb97-65 > .kt-inside-inner-col > .wp-block-kadence-advancedgallery{align-self:stretch;}.kadence-column43803_afeb97-65 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column43803_afeb97-65 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column43803_afeb97-65{position:relative;}.kadence-column43803_afeb97-65, .kt-inside-inner-col > .kadence-column43803_afeb97-65:not(.specificity){margin-top:24px;}@media all and (max-width: 1024px){.kadence-column43803_afeb97-65 > .kt-inside-inner-col{flex-direction:column;justify-content:center;align-items:stretch;}}@media all and (max-width: 767px){.kadence-column43803_afeb97-65 > .kt-inside-inner-col{flex-direction:column;justify-content:center;align-items:stretch;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column43803_afeb97-65 faq-accordion-section-top\"><div class=\"kt-inside-inner-col\"><style>.kb-row-layout-id43803_ae2aad-3e > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id43803_ae2aad-3e > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id43803_ae2aad-3e > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);max-width:1248px;margin-left:auto;margin-right:auto;padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id43803_ae2aad-3e > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id43803_ae2aad-3e > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}@media all and (max-width: 767px){.kb-row-layout-id43803_ae2aad-3e > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id43803_ae2aad-3e alignnone wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-1-columns kt-row-layout-equal kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top\">\n<style>.kadence-column43803_e406b1-fa > .kt-inside-inner-col,.kadence-column43803_e406b1-fa > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column43803_e406b1-fa > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column43803_e406b1-fa > .kt-inside-inner-col{flex-direction:column;}.kadence-column43803_e406b1-fa > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column43803_e406b1-fa > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column43803_e406b1-fa{position:relative;}@media all and (max-width: 1024px){.kadence-column43803_e406b1-fa > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column43803_e406b1-fa > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column43803_e406b1-fa\"><div class=\"kt-inside-inner-col\"><style>.wp-block-kadence-advancedheading.kt-adv-heading43803_d2ce7b-47, .wp-block-kadence-advancedheading.kt-adv-heading43803_d2ce7b-47[data-kb-block=\"kb-adv-heading43803_d2ce7b-47\"]{max-width:708px;padding-top:0px;padding-right:0px;padding-bottom:var(--global-kb-spacing-xxs, 0.5rem);padding-left:0px;text-align:left;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading43803_d2ce7b-47 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading43803_d2ce7b-47[data-kb-block=\"kb-adv-heading43803_d2ce7b-47\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading43803_d2ce7b-47 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading43803_d2ce7b-47[data-kb-block=\"kb-adv-heading43803_d2ce7b-47\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2 class=\"kt-adv-heading43803_d2ce7b-47 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading43803_d2ce7b-47\"><strong>Frequently Asked Questions<\/strong><\/h2>\n\n\n<style>.kt-accordion-id43803_30de2e-4e .kt-accordion-inner-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:16px;}.kt-accordion-id43803_30de2e-4e .kt-accordion-panel-inner{border-top:0px solid #ced4da;border-right:0px solid #ced4da;border-bottom:0px solid #ced4da;border-left:0px solid #ced4da;border-bottom-right-radius:8px;border-bottom-left-radius:8px;background:#ffffff;padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-right:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);padding-left:var(--global-kb-spacing-sm, 1.5rem);}.kt-accordion-id43803_30de2e-4e > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header{border-top-color:var(--global-palette9, #ffffff);border-top-style:solid;border-right-color:var(--global-palette9, #ffffff);border-right-style:solid;border-bottom-color:var(--global-palette9, #ffffff);border-bottom-style:solid;border-left-color:var(--global-palette9, #ffffff);border-left-style:solid;border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-right-radius:8px;border-bottom-left-radius:8px;background:#ffffff;font-size:var(--global-kb-font-size-md, 1.25rem);line-height:20px;font-family:'Open Sans';font-weight:600;color:#212529;padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-right:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);padding-left:var(--global-kb-spacing-sm, 1.5rem);}.kt-accordion-id43803_30de2e-4e:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id43803_30de2e-4e:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap .kt-blocks-accordion-icon-trigger:before{background:#212529;}.kt-accordion-id43803_30de2e-4e:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger{background:#212529;}.kt-accordion-id43803_30de2e-4e:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id43803_30de2e-4e:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger:before{background:#ffffff;}.kt-accordion-id43803_30de2e-4e > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header:hover, \n\t\t\t\tbody:not(.hide-focus-outline) .kt-accordion-id43803_30de2e-4e .kt-blocks-accordion-header:focus-visible{color:#444444;border-top-color:var(--global-palette9, #ffffff);border-top-style:solid;border-right-color:var(--global-palette9, #ffffff);border-right-style:solid;border-bottom-color:var(--global-palette9, #ffffff);border-bottom-style:solid;border-left-color:var(--global-palette9, #ffffff);border-left-style:solid;}.kt-accordion-id43803_30de2e-4e:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id43803_30de2e-4e:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:before, body:not(.hide-focus-outline) .kt-accordion-id43803_30de2e-4e:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-blocks-accordion--visible .kt-blocks-accordion-icon-trigger:after, body:not(.hide-focus-outline) .kt-accordion-id43803_30de2e-4e:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger:before{background:#444444;}.kt-accordion-id43803_30de2e-4e:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger, body:not(.hide-focus-outline) .kt-accordion-id43803_30de2e-4e:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger{background:#444444;}.kt-accordion-id43803_30de2e-4e .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible,\n\t\t\t\t.kt-accordion-id43803_30de2e-4e > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active{color:#444444;background:#ffffff;border-top:0px solid var(--global-palette9, #ffffff);border-right:0px solid var(--global-palette9, #ffffff);border-bottom:0px solid var(--global-palette9, #ffffff);border-left:0px solid var(--global-palette9, #ffffff);}.kt-accordion-id43803_30de2e-4e:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id43803_30de2e-4e:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:before{background:#444444;}.kt-accordion-id43803_30de2e-4e:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger{background:#444444;}.kt-accordion-id43803_30de2e-4e:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id43803_30de2e-4e:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:before{background:#ffffff;}@media all and (max-width: 1024px){.kt-accordion-id43803_30de2e-4e .kt-accordion-panel-inner{border-top:0px solid #ced4da;border-right:0px solid #ced4da;border-bottom:0px solid #ced4da;border-left:0px solid #ced4da;}}@media all and (max-width: 1024px){.kt-accordion-id43803_30de2e-4e > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header{border-top-color:var(--global-palette9, #ffffff);border-top-style:solid;border-right-color:var(--global-palette9, #ffffff);border-right-style:solid;border-bottom-color:var(--global-palette9, #ffffff);border-bottom-style:solid;border-left-color:var(--global-palette9, #ffffff);border-left-style:solid;}}@media all and (max-width: 1024px){.kt-accordion-id43803_30de2e-4e > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header:hover, \n\t\t\t\tbody:not(.hide-focus-outline) .kt-accordion-id43803_30de2e-4e .kt-blocks-accordion-header:focus-visible{border-top-color:var(--global-palette9, #ffffff);border-top-style:solid;border-right-color:var(--global-palette9, #ffffff);border-right-style:solid;border-bottom-color:var(--global-palette9, #ffffff);border-bottom-style:solid;border-left-color:var(--global-palette9, #ffffff);border-left-style:solid;}}@media all and (max-width: 1024px){.kt-accordion-id43803_30de2e-4e .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible,\n\t\t\t\t.kt-accordion-id43803_30de2e-4e > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active{border-top:0px solid var(--global-palette9, #ffffff);border-right:0px solid var(--global-palette9, #ffffff);border-bottom:0px solid var(--global-palette9, #ffffff);border-left:0px solid var(--global-palette9, #ffffff);}}@media all and (max-width: 767px){.kt-accordion-id43803_30de2e-4e .kt-accordion-inner-wrap{display:block;}.kt-accordion-id43803_30de2e-4e .kt-accordion-inner-wrap .kt-accordion-pane:not(:first-child){margin-top:16px;}.kt-accordion-id43803_30de2e-4e .kt-accordion-panel-inner{border-top:0px solid #ced4da;border-right:0px solid #ced4da;border-bottom:0px solid #ced4da;border-left:0px solid #ced4da;}.kt-accordion-id43803_30de2e-4e > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header{border-top-color:var(--global-palette9, #ffffff);border-top-style:solid;border-right-color:var(--global-palette9, #ffffff);border-right-style:solid;border-bottom-color:var(--global-palette9, #ffffff);border-bottom-style:solid;border-left-color:var(--global-palette9, #ffffff);border-left-style:solid;}.kt-accordion-id43803_30de2e-4e > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header:hover, \n\t\t\t\tbody:not(.hide-focus-outline) .kt-accordion-id43803_30de2e-4e .kt-blocks-accordion-header:focus-visible{border-top-color:var(--global-palette9, #ffffff);border-top-style:solid;border-right-color:var(--global-palette9, #ffffff);border-right-style:solid;border-bottom-color:var(--global-palette9, #ffffff);border-bottom-style:solid;border-left-color:var(--global-palette9, #ffffff);border-left-style:solid;}.kt-accordion-id43803_30de2e-4e .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible,\n\t\t\t\t.kt-accordion-id43803_30de2e-4e > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active{border-top:0px solid var(--global-palette9, #ffffff);border-right:0px solid var(--global-palette9, #ffffff);border-bottom:0px solid var(--global-palette9, #ffffff);border-left:0px solid var(--global-palette9, #ffffff);}}<\/style>\n<div class=\"wp-block-kadence-accordion alignnone\"><div class=\"kt-accordion-wrap kt-accordion-id43803_30de2e-4e kt-accordion-has-12-panes kt-active-pane-0 kt-accordion-block kt-pane-header-alignment-left kt-accodion-icon-style-arrow kt-accodion-icon-side-right\" style=\"max-width:1664px\"><div class=\"kt-accordion-inner-wrap\" data-allow-multiple-open=\"false\" data-start-open=\"none\">\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-1 kt-pane43803_b41eca-0e item-accordion\"><div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\" type=\"button\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\">What are Certified Reference Materials (CRMs)?<\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div><div class=\"kt-accordion-panel kt-accordion-panel-hidden\"><div class=\"kt-accordion-panel-inner\">\n<p class=\"has-16-16-font-size wp-block-paragraph\">A CRM is a reference standard that meets strict criteria defined under ISO 17034 and ISO\/IEC 17025: it&#8217;s made of raw materials characterized via qualified methods on qualified instruments, produced in an ISO-accredited lab under documented procedures, and falls under the manufacturer&#8217;s scope of accreditation. Learn more about Restek&#8217;s ISO quality credentials at restek.com\/iso.<\/p>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-3 kt-pane43803_8c1399-f6 item-accordion\"><div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\" type=\"button\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\">Can I order reference standards, columns, and sample prep supplies from one supplier?<\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div><div class=\"kt-accordion-panel kt-accordion-panel-hidden\"><div class=\"kt-accordion-panel-inner\">\n<p class=\"has-16-16-font-size wp-block-paragraph\">Yes. Along with primary- and secondary-source reference standards, Restek supplies GC and LC columns, sample prep products, and accessories, so you can consolidate your lab&#8217;s ordering with a single trusted source instead of managing multiple vendors.<\/p>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-8 kt-pane43803_29b782-71 item-accordion\"><div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\" type=\"button\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\">What&#8217;s the difference between a stock and a custom reference standard?<\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div><div class=\"kt-accordion-panel kt-accordion-panel-hidden\"><div class=\"kt-accordion-panel-inner\">\n<p class=\"has-16-16-font-size wp-block-paragraph\">Stock standards are preformulated, cataloged, and typically ready to ship from Restek&#8217;s active inventory. Custom standards are formulated to your exact specifications by our formulations chemists, and when a stock product doesn&#8217;t meet your needs, and both are backed by the same ISO scopes of accreditation.<\/p>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-9 kt-pane43803_cc785f-4e item-accordion\"><div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\" type=\"button\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\">What is the typical shelf life of a Restek reference standard?<\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div><div class=\"kt-accordion-panel kt-accordion-panel-hidden\"><div class=\"kt-accordion-panel-inner\">\n<p class=\"has-16-16-font-size wp-block-paragraph\">At least 95% of Restek&#8217;s reference standards provide a 12-month shelf life or longer, backed by ongoing long-term stability and short-term shipping stability studies conducted in accordance with ISO 17034 and ISO Guide 35.<\/p>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-11 kt-pane43803_16a93f-02 item-accordion\"><div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\" type=\"button\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\">What does NIST-traceable mean, and why does it matter for reference standards?<\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div><div class=\"kt-accordion-panel kt-accordion-panel-hidden\"><div class=\"kt-accordion-panel-inner\">\n<p class=\"has-16-16-font-size wp-block-paragraph\">NIST-traceable means a measurement can be traced back to standards maintained by the National Institute of Standards and Technology through an unbroken chain of calibrations. Restek&#8217;s analytical balances are verified at seven mass levels daily using NIST-traceable weights, helping ensure every standard&#8217;s concentration is measured accurately.<\/p>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-12 kt-pane43803_876fe4-c2 item-accordion\"><div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\" type=\"button\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\">Can Restek serve as both my primary and secondary source?<\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div><div class=\"kt-accordion-panel kt-accordion-panel-hidden\"><div class=\"kt-accordion-panel-inner\">\n<p class=\"has-16-16-font-size wp-block-paragraph\">Yes. Restek routinely prepares two independently produced lots of stock reference materials using two technicians and two different NIST-traceable balances, so we can serve as both your primary and secondary source without adding another vendor to your procurement process.<\/p>\n<\/div><\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n<\/div><\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div style=\"height:32px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<style>.kadence-column43803_14fd33-d4 > .kt-inside-inner-col{padding-top:var(--global-kb-spacing-md, 2rem);padding-right:var(--global-kb-spacing-lg, 3rem);padding-left:var(--global-kb-spacing-lg, 3rem);}.kadence-column43803_14fd33-d4 > .kt-inside-inner-col,.kadence-column43803_14fd33-d4 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column43803_14fd33-d4 > 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mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading43803_054764-61 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading43803_054764-61[data-kb-block=\"kb-adv-heading43803_054764-61\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2 class=\"kt-adv-heading43803_054764-61 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading43803_054764-61\"><strong>Need Help with Reference Standards?<\/strong><\/h2>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"font-size:20px\">From method selection to product recommendations, our reference standards experts are here to help you navigate complex workflows and achieve accurate, reliable results.<\/p>\n\n\n<style>.wp-block-kadence-advancedbtn.kb-btns43803_af3507-3a{gap:var(--global-kb-gap-xs, 0.5rem 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.kb-btn43803_eab938-43.kb-button{width:initial;}.wp-block-kadence-advancedbtn .kb-btn43803_eab938-43.kb-button{color:var(--global-palette9, #ffffff);background:#ff9a00;border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-right-radius:8px;border-bottom-left-radius:8px;border-top-color:#ff9a00;border-top-style:solid;border-right-color:#ff9a00;border-right-style:solid;border-bottom-color:#ff9a00;border-bottom-style:solid;border-left-color:#ff9a00;border-left-style:solid;}.wp-block-kadence-advancedbtn .kb-btn43803_eab938-43.kb-button:not(.specificity):not(.extra-specificity){text-decoration:none;}.kb-btn43803_eab938-43.kb-button .kb-svg-icon-wrap{color:var(--global-palette9, #ffffff);}.kb-btn43803_eab938-43.kb-button:hover .kb-svg-icon-wrap, .kb-btn43803_eab938-43.kb-button:focus .kb-svg-icon-wrap{color:var(--global-palette9, #ffffff);}.wp-block-kadence-advancedbtn .kb-btn43803_eab938-43.kb-button:hover, .wp-block-kadence-advancedbtn .kb-btn43803_eab938-43.kb-button:focus{color:var(--global-palette9, #ffffff);background:#f37c20;}@media all and (max-width: 1024px){.wp-block-kadence-advancedbtn .kb-btn43803_eab938-43.kb-button{border-top-color:#ff9a00;border-top-style:solid;border-right-color:#ff9a00;border-right-style:solid;border-bottom-color:#ff9a00;border-bottom-style:solid;border-left-color:#ff9a00;border-left-style:solid;}}@media all and (max-width: 767px){.wp-block-kadence-advancedbtn .kb-btn43803_eab938-43.kb-button{border-top-color:#ff9a00;border-top-style:solid;border-right-color:#ff9a00;border-right-style:solid;border-bottom-color:#ff9a00;border-bottom-style:solid;border-left-color:#ff9a00;border-left-style:solid;}}<\/style><a class=\"kb-button kt-button button kb-btn43803_eab938-43 kt-btn-size-standard kt-btn-width-type-auto kb-btn-global-fill kt-btn-has-text-true kt-btn-has-svg-false wp-block-kadence-singlebtn\" href=\"https:\/\/explore.restek.com\/contact-reference-standards\" target=\"_blank\" rel=\"noopener\"><span class=\"kt-btn-inner-text\"><strong>Contact a Reference Standards Expert<\/strong><\/span><\/a><\/div>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Whether it\u2019s a stock, off-the-shelf reference standard or a one-of-a-kind, custom-formulated solution, there are 10 critical steps that Restek takes to separate our reference standards from the 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Trust Restek for reliable, high-quality analytical solutions."}],"_links":{"self":[{"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/posts\/43803","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/comments?post=43803"}],"version-history":[{"count":18,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/posts\/43803\/revisions"}],"predecessor-version":[{"id":103196,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/posts\/43803\/revisions\/103196"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/media\/100954"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/media?parent=43803"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/categories?post=43803"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/tags?post=43803"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/industries-application?post=43803"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/post-badge?post=43803"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/resource-type?post=43803"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/product-library?post=43803"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/resource-technique?post=43803"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/ppma_author?post=43803"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}