{"id":43465,"date":"2025-10-03T21:13:35","date_gmt":"2025-10-03T21:13:35","guid":{"rendered":"https:\/\/discover.restek.com\/uncategorized\/pfas-analysis-by-astm-d7979-20-for-water-sludge-influent-effluent-and-wastewater\/"},"modified":"2026-08-07T13:54:07","modified_gmt":"2026-08-07T13:54:07","slug":"pfas-analysis-by-astm-d7979-20-for-water-sludge-influent-effluent-and-wastewater","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/es\/articles-fr\/evar4304\/pfas-analysis-by-astm-d7979-20-for-water-sludge-influent-effluent-and-wastewater","title":{"rendered":"PFAS Analysis by ASTM D7979-20 for Water, Sludge, Influent, Effluent, and Wastewater"},"content":{"rendered":"\n<ul class=\"wp-block-list\">\n<li><strong>Sample Matrix:<\/strong> water, sludge, influent, effluent, and wastewater samples<\/li>\n\n\n\n<li><strong>Sample Preparation: <\/strong>filtration<\/li>\n\n\n\n<li><strong>Detection Technique: <\/strong>LC-MS\/MS<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Standard Test Method for Determination of Per- and Polyfluoroalkyl Substances in Water, Sludge, Influent, Effluent, and Wastewater by Liquid Chromatography Tandem Mass Spectrometry (LC-MS\/MS)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">ASTM D7979-20 is used for the analysis of 21 per- and polyfluoroalkyl substances (PFAS) in water, sludge, influent, effluent, and wastewater samples, and the procedure covers filtration followed by LC-MS\/MS analysis.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D7979-20 is not available from Restek, but it may be purchased from ASTM. The full list of target analytes and products recommended by Restek is provided below. In addition, you can register and directly <a href=\"https:\/\/explore.restek.com\/PFAS-Guides\" target=\"_blank\" rel=\"noopener\">compare analyte lists and matrices across PFAS analysis methods here<\/a> or visit <a href=\"https:\/\/discover.restek.com\/pfas-analysis\/\">www.restek.com\/PFAS<\/a> to explore our technical resources for PFAS analysis.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-background wp-element-button\" href=\"https:\/\/www.astm.org\/d7979-20.html\" style=\"background-color:#015e9a;padding-right:50px;padding-left:50px\" target=\"_blank\" rel=\"noreferrer noopener\">Access Method<\/a><\/div>\n<\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Analyte List for ASTM D7979-20 for PFAS Analysis<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">PFAS acronyms, compound names, and CAS numbers for these perfluorinated compounds vary across methods and guidelines, and they also depend on compound form (e.g., neutral vs. salt).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The following list uses standardized terminology to allow easy comparison across the methods and guidelines in our <a href=\"https:\/\/explore.restek.com\/PFAS-Guides\" target=\"_blank\" rel=\"noopener\">comprehensive guide<\/a>. Please refer to ASTM D7979-20 for method-specific nomenclature and to confirm how the test method adheres to its published terminology.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Acronym<\/strong><\/td><td><strong>Compound Name<\/strong><\/td><td><strong>CAS#<\/strong><\/td><\/tr><tr><td>PFBS<\/td><td>Perfluoro-1-butanesulfonic acid<\/td><td>375-73-5<\/td><\/tr><tr><td>PFDA<\/td><td>Perfluorodecanoic acid<\/td><td>335-76-2<\/td><\/tr><tr><td>PFDoA<\/td><td>Perfluorododecanoic acid<\/td><td>307-55-1<\/td><\/tr><tr><td>PFHpA<\/td><td>Perfluoroheptanoic acid<\/td><td>375-85-9<\/td><\/tr><tr><td>PFHxS<\/td><td>Perfluoro-1-hexanesulfonic acid<\/td><td>355-46-4<\/td><\/tr><tr><td>PFHxA<\/td><td>Perfluorohexanoic acid<\/td><td>307-24-4<\/td><\/tr><tr><td>PFNA<\/td><td>Perfluorononanoic acid<\/td><td>375-95-1<\/td><\/tr><tr><td>PFOS<\/td><td>Perfluorooctanesulfonic acid<\/td><td>1763-23-1<\/td><\/tr><tr><td>PFOA<\/td><td>Perfluorooctanoic acid<\/td><td>335-67-1<\/td><\/tr><tr><td>PFTeDA<\/td><td>Perfluorotetradecanoic acid<\/td><td>376-06-7<\/td><\/tr><tr><td>PFTrDA<\/td><td>Perfluorotridecanoic acid<\/td><td>72629-94-8<\/td><\/tr><tr><td>PFUnA<\/td><td>Perfluoroundecanoic acid<\/td><td>2058-94-8<\/td><\/tr><tr><td>PFBA<\/td><td>Perfluorobutanoic acid<\/td><td>375-22-4<\/td><\/tr><tr><td>PFPeA<\/td><td>Perfluoropentanoic acid<\/td><td>2706-90-3<\/td><\/tr><tr><td>8:2 FTUCA, FOUEA<\/td><td>2<em>H<\/em>-perfluoro-2-decenoic acid<\/td><td>70887-84-2<\/td><\/tr><tr><td>PFecHS<\/td><td>Decafluoro-4-(pentafluoroethyl)cyclohexanesulfonate<\/td><td>646-83-3 (67584-42-3)<\/td><\/tr><tr><td>6:2FTCA, 6:2 FHEA<\/td><td>2-perfluorohexyl ethanoic acid<\/td><td>53826-12-3<\/td><\/tr><tr><td>8:2 FOEA<\/td><td>2-perfluorooctyl ethanoic acid<\/td><td>27854-31-5<\/td><\/tr><tr><td>10:2 FDEA<\/td><td>2-perfluorodecyl ethanoic acid<\/td><td>53826-13-4<\/td><\/tr><tr><td>6:2 FHUEA<\/td><td>2<em>H<\/em>-perfluoro-2-octenoic acid<\/td><td>70887-88-6<\/td><\/tr><tr><td>7:3 FTCA, FHpPA<\/td><td>7:3 Fluorotelomer carboxylic acid or 3-perfluoroheptyl propanoic acid<\/td><td>812-70-4<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-background wp-element-button\" href=\"https:\/\/explore.restek.com\/PFAS-Guides\" style=\"background-color:#015e9a;padding-right:50px;padding-left:50px\" target=\"_blank\" rel=\"noreferrer noopener\">Want to compare analyte lists? <em>Check out our guide!<\/em><\/a><\/div>\n<\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Recommended Products for ASTM D7979-20 for PFAS Analysis<\/h3>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n        <div class=\"cpb\">\n            <h3 class=\"cpb-heading\">Products Mentioned<\/h3>\n            <hr class=\"cpb-heading-underline\" \/>\n            <div class=\"cpb-list\">\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/9304A52\">                                Catalog No. 9304A52                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">Raptor C18, 2.7 \u00b5m, 50 x 2.1 mm HPLC Column<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/9304A52\">View Product<\/a>\n                                                    <\/div>\n                    <\/div>\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/9634252\">                                Catalog No. 9634252                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">Force C18, 1.8 \u00b5m, 50 x 2.1 mm LC Column<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/9634252\">View Product<\/a>\n                                                    <\/div>\n                    <\/div>\n                            <\/div>\n        <\/div>\n        \n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n        <div class=\"cpb\">\n            <h3 class=\"cpb-heading\">Delay Columns:<\/h3>\n            <hr class=\"cpb-heading-underline\" \/>\n            <div class=\"cpb-list\">\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/27854\">                                Catalog No. 27854                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">PFAS Delay Column, 5 \u00b5m, 50 x 2.1 mm HPLC Column<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/27854\">View Product<\/a>\n                                                    <\/div>\n                    <\/div>\n                            <\/div>\n        <\/div>\n        \n\n\n<p class=\"wp-block-paragraph\">A PFAS delay column helps reduce system-related background contributions that can interfere with measurements at lower concentrations. Reducing instrument background may be especially important for avoiding a higher reporting limit in challenging analyses.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">PFAS delay column: 5 \u00b5m, 50 x 3.0 mm (cat.# 580959 [custom product])<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n        <div class=\"cpb\">\n            <h3 class=\"cpb-heading\">Guard Columns:<\/h3>\n            <hr class=\"cpb-heading-underline\" \/>\n            <div class=\"cpb-list\">\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/25809\">                                Catalog No. 25809                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">UltraShield UHPLC PreColumn Filter, 0.2 \u00b5m Frit, ea.<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/25809\">View Product<\/a>\n                                                    <\/div>\n                    <\/div>\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/25808\">                                Catalog No. 25808                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">EXP Direct Connect Holder for EXP Guard Cartridges, Includes Fitting &amp; Ferrules<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/25808\">View Product<\/a>\n                                                    <\/div>\n                    <\/div>\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/9304A0252\">                                Catalog No. 9304A0252                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">Raptor C18 EXP Guard Column Cartridge, 2.7 \u00b5m, 5 x 2.1 mm, 3-pk.<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/9304A0252\">View Product<\/a>\n                                                    <\/div>\n                    <\/div>\n                            <\/div>\n        <\/div>\n        \n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Guard columns help improve performance by protecting the analytical column from particulates and retained matrix components.<\/p>\n\n\n        <div class=\"cpb\">\n            <h3 class=\"cpb-heading\">Sample Prep:<\/h3>\n            <hr class=\"cpb-heading-underline\" \/>\n            <div class=\"cpb-list\">\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/28935\">                                Catalog No. 28935                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">25 mm Syringe Filter, 0.22 \u00b5m, Polypropylene, Blue, Luer-Lock, 100-pk.<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/28935\">View Product<\/a>\n                                                    <\/div>\n                    <\/div>\n                            <\/div>\n        <\/div>\n        \n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Appropriate filtration materials are important for PFAS workflows because sample prep consumables can affect background levels. Careful <a href=\"https:\/\/discover.restek.com\/articles\/evss4368\/a-two-in-one-solution-for-pfas-spe-sample-preparation\">PFAS sample preparation<\/a>, including thoughtful consumable selection, is one of the most practical steps a laboratory can take to achieve a lower method detection limit.<\/p>\n\n\n        <div class=\"cpb\">\n            <h3 class=\"cpb-heading\">General Lab Supplies:<\/h3>\n            <hr class=\"cpb-heading-underline\" \/>\n            <div class=\"cpb-list\">\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/23243\">                                Catalog No. 23243                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">Limited-Volume Screw-Thread Polypropylene Vials, 9 mm, 700 \u00b5L, 12 x 32 mm, 100-pk.<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/23243\">View Product<\/a>\n                                                    <\/div>\n                    <\/div>\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/23246\">                                Catalog No. 23246                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">Limited-Volume Screw-Thread Polypropylene Vials, 9 mm, 700 \u00b5L, 12 x 32 mm, 1000-pk.<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/23246\">View Product<\/a>\n                                                    <\/div>\n                    <\/div>\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/23244\">                                Catalog No. 23244                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">2.0 mL, 9 mm Solid-Top Polyethylene Caps, Screw-Thread, 10 mil thick membrane, Clear, 100-pk.<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/23244\">View Product<\/a>\n                                                    <\/div>\n                    <\/div>\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/23247\">                                Catalog No. 23247                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">2.0 mL, 9 mm Solid-Top Polyethylene Caps, Screw-Thread, 10 mil thick membrane, Clear, 1000-pk.<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/23247\">View Product<\/a>\n                                                    <\/div>\n                    <\/div>\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/25846\">                                Catalog No. 25846                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">Empty Centrifuge Tubes, 50 mL, Polypropylene w\/Cap, 50-pk.<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/25846\">View Product<\/a>\n                                                    <\/div>\n                    <\/div>\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/28290\">                                Catalog No. 28290                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">Empty Centrifuge Tubes, 50 mL, Polypropylene w\/Cap, 500-pk.<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/28290\">View Product<\/a>\n                                                    <\/div>\n                    <\/div>\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/22775\">                                Catalog No. 22775                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">Norm-Ject Plastic Syringe, 10 mL Luer Lock Tip, 100-pk.<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/22775\">View Product<\/a>\n                                                    <\/div>\n                    <\/div>\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/22774\">                                Catalog No. 22774                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">Norm-Ject Plastic Syringe, 5 mL Luer Lock Tip, 100-pk.<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.restek.com\/p\/22774\">View Product<\/a>\n                                                    <\/div>\n                    <\/div>\n                            <\/div>\n        <\/div>\n        \n\n\n<p class=\"wp-block-paragraph\">Polypropylene lab supplies are commonly used in PFAS workflows to address contamination concerns and sample integrity issues in routine handling. Careful material selection is also important practice in trace-level PFAS analysis.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">* Note that ASTM methods refer to the use of a glass syringe. Norm-Ject plastic syringes are made from polypropylene\/polyethylene and can be used as an alternative.<\/p>\n\n\n\n<div class=\"wp-block-group hub-fullwidth-container has-theme-palette-9-background-color has-background\" style=\"margin-top:0px;margin-bottom:0px;padding-top:var(--wp--preset--spacing--50);padding-bottom:var(--wp--preset--spacing--50)\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><style>.kadence-column65610_a9e240-74 > .kt-inside-inner-col{padding-top:45px;padding-right:0px;padding-bottom:45px;padding-left:0px;}.kadence-column65610_a9e240-74 > .kt-inside-inner-col,.kadence-column65610_a9e240-74 > .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-column65610_a9e240-74 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column65610_a9e240-74 > .kt-inside-inner-col{flex-direction:column;}.kadence-column65610_a9e240-74 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column65610_a9e240-74 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column65610_a9e240-74{position:relative;}@media all and (max-width: 1024px){.kadence-column65610_a9e240-74 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column65610_a9e240-74 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column65610_a9e240-74 hub-guttered-centered-container\"><div class=\"kt-inside-inner-col\"><style>.kb-row-layout-id65610_5c8f08-db > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id65610_5c8f08-db > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id65610_5c8f08-db > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);padding-top:20px;padding-right:20px;padding-bottom:20px;padding-left:20px;grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id65610_5c8f08-db{border-top-left-radius:16px;border-top-right-radius:16px;border-bottom-right-radius:16px;border-bottom-left-radius:16px;overflow:clip;isolation:isolate;}.kb-row-layout-id65610_5c8f08-db > .kt-row-layout-overlay{border-top-left-radius:16px;border-top-right-radius:16px;border-bottom-right-radius:16px;border-bottom-left-radius:16px;}.kb-row-layout-id65610_5c8f08-db > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id65610_5c8f08-db > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}@media all and (max-width: 767px){.kb-row-layout-id65610_5c8f08-db > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id65610_5c8f08-db 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-column65610_c6f88d-2a > .kt-inside-inner-col,.kadence-column65610_c6f88d-2a > .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-column65610_c6f88d-2a > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column65610_c6f88d-2a > .kt-inside-inner-col{flex-direction:column;}.kadence-column65610_c6f88d-2a > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column65610_c6f88d-2a > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column65610_c6f88d-2a{position:relative;}@media all and (max-width: 1024px){.kadence-column65610_c6f88d-2a > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column65610_c6f88d-2a > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column65610_c6f88d-2a\"><div class=\"kt-inside-inner-col\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/discover.restek.com\/wp-content\/uploads\/figure-gnlp4243-pfas-hub-contact-an-expert-leaf-graphic-1024x1024.png\" alt=\"Icon depicting customer service person.\" class=\"wp-image-95744\" style=\"width:100px\" title=\"-\" srcset=\"https:\/\/discover.restek.com\/wp-content\/uploads\/figure-gnlp4243-pfas-hub-contact-an-expert-leaf-graphic-1024x1024.png 1024w, https:\/\/discover.restek.com\/wp-content\/uploads\/figure-gnlp4243-pfas-hub-contact-an-expert-leaf-graphic-300x300.png 300w, https:\/\/discover.restek.com\/wp-content\/uploads\/figure-gnlp4243-pfas-hub-contact-an-expert-leaf-graphic-150x150.png 150w, https:\/\/discover.restek.com\/wp-content\/uploads\/figure-gnlp4243-pfas-hub-contact-an-expert-leaf-graphic-768x768.png 768w, https:\/\/discover.restek.com\/wp-content\/uploads\/figure-gnlp4243-pfas-hub-contact-an-expert-leaf-graphic.png 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading65610_1efbac-67, .wp-block-kadence-advancedheading.kt-adv-heading65610_1efbac-67[data-kb-block=\"kb-adv-heading65610_1efbac-67\"]{margin-top:20px;text-align:center;font-size:48px;line-height:55px;font-weight:400;font-style:normal;font-family:'Open Sans';}.wp-block-kadence-advancedheading.kt-adv-heading65610_1efbac-67, .wp-block-kadence-advancedheading.kt-adv-heading65610_1efbac-67[data-kb-block=\"kb-adv-heading65610_1efbac-67\"] .kb-adv-text-inner{background-image:linear-gradient(270deg,rgb(4,137,214) 0%,rgb(1,94,155) 100%);background-clip:text;-webkit-box-decoration-break:clone;box-decoration-break:clone;-webkit-background-clip:text;-webkit-text-fill-color:transparent;}.wp-block-kadence-advancedheading.kt-adv-heading65610_1efbac-67 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading65610_1efbac-67[data-kb-block=\"kb-adv-heading65610_1efbac-67\"] mark.kt-highlight{font-style:normal;-webkit-text-fill-color:initial !important;-webkit-background-clip:initial !important;background-clip:initial !important;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-heading65610_1efbac-67 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading65610_1efbac-67[data-kb-block=\"kb-adv-heading65610_1efbac-67\"] img.kb-inline-image{width:150px;vertical-align:baseline;}@media all and (max-width: 1024px){.wp-block-kadence-advancedheading.kt-adv-heading65610_1efbac-67, .wp-block-kadence-advancedheading.kt-adv-heading65610_1efbac-67[data-kb-block=\"kb-adv-heading65610_1efbac-67\"]{font-size:40px;}}@media all and (max-width: 767px){.wp-block-kadence-advancedheading.kt-adv-heading65610_1efbac-67, .wp-block-kadence-advancedheading.kt-adv-heading65610_1efbac-67[data-kb-block=\"kb-adv-heading65610_1efbac-67\"]{font-size:36px;}}<\/style><h2 class=\"kt-adv-heading65610_1efbac-67 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading65610_1efbac-67\"><span class=\"kb-adv-text-inner\">Need Help with Your PFAS Analysis?<\/span><\/h2>\n\n\n<p class=\"has-text-align-center has-17-font-size has-theme-palette-3-color has-text-color has-link-color wp-elements-83322fdd1716a262d8c63c48ae9648a2 wp-block-paragraph\" style=\"padding-right:var(--wp--preset--spacing--50);padding-left:var(--wp--preset--spacing--50);font-size:23px\">From method selection to product recommendations, our PFAS experts are here to help you navigate<br>complex workflows and achieve accurate, reliable results.<\/p>\n\n\n<style>.wp-block-kadence-advancedbtn.kb-btns65610_9347fb-a3{gap:var(--global-kb-gap-xs, 0.5rem );justify-content:center;align-items:center;}.kt-btns65610_9347fb-a3 .kt-button{font-weight:normal;font-style:normal;}.kt-btns65610_9347fb-a3 .kt-btn-wrap-0{margin-right:5px;}.wp-block-kadence-advancedbtn.kt-btns65610_9347fb-a3 .kt-btn-wrap-0 .kt-button{color:#555555;border-color:#555555;}.wp-block-kadence-advancedbtn.kt-btns65610_9347fb-a3 .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns65610_9347fb-a3 .kt-btn-wrap-0 .kt-button:focus{color:#ffffff;border-color:#444444;}.wp-block-kadence-advancedbtn.kt-btns65610_9347fb-a3 .kt-btn-wrap-0 .kt-button::before{display:none;}.wp-block-kadence-advancedbtn.kt-btns65610_9347fb-a3 .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns65610_9347fb-a3 .kt-btn-wrap-0 .kt-button:focus{background:#444444;}<\/style>\n<div class=\"wp-block-kadence-advancedbtn kb-buttons-wrap kb-btns65610_9347fb-a3\"><style>ul.menu .wp-block-kadence-advancedbtn .kb-btn65610_b6da1c-d1.kb-button{width:initial;}.wp-block-kadence-advancedbtn .kb-btn65610_b6da1c-d1.kb-button{color:var(--global-palette9, #ffffff);background:#61b522;font-size:var(--global-kb-font-size-md, 1.25rem);border-top-left-radius:10px;border-top-right-radius:10px;border-bottom-right-radius:10px;border-bottom-left-radius:10px;border-top:2px solid #61b522;border-right:2px solid #61b522;border-bottom:2px solid #61b522;border-left:2px solid #61b522;}.kb-btn65610_b6da1c-d1.kb-button .kb-svg-icon-wrap{color:var(--global-palette9, #ffffff);}.kb-btn65610_b6da1c-d1.kb-button:hover .kb-svg-icon-wrap, .kb-btn65610_b6da1c-d1.kb-button:focus .kb-svg-icon-wrap{color:#61b522;}.wp-block-kadence-advancedbtn .kb-btn65610_b6da1c-d1.kb-button:hover, .wp-block-kadence-advancedbtn .kb-btn65610_b6da1c-d1.kb-button:focus{color:#61b522;background:var(--global-palette9, #ffffff);border-top:2px solid #61b522;border-right:2px solid #61b522;border-bottom:2px solid #61b522;border-left:2px solid #61b522;}@media all and (max-width: 1024px){.wp-block-kadence-advancedbtn .kb-btn65610_b6da1c-d1.kb-button{border-top:2px solid #61b522;border-right:2px solid #61b522;border-bottom:2px solid #61b522;border-left:2px solid #61b522;}}@media all and (max-width: 1024px){.wp-block-kadence-advancedbtn .kb-btn65610_b6da1c-d1.kb-button:hover, .wp-block-kadence-advancedbtn .kb-btn65610_b6da1c-d1.kb-button:focus{border-top:2px solid #61b522;border-right:2px solid #61b522;border-bottom:2px solid #61b522;border-left:2px solid #61b522;}}@media all and (max-width: 767px){.wp-block-kadence-advancedbtn .kb-btn65610_b6da1c-d1.kb-button{border-top:2px solid #61b522;border-right:2px solid #61b522;border-bottom:2px solid #61b522;border-left:2px solid #61b522;}.wp-block-kadence-advancedbtn .kb-btn65610_b6da1c-d1.kb-button:hover, .wp-block-kadence-advancedbtn .kb-btn65610_b6da1c-d1.kb-button:focus{border-top:2px solid #61b522;border-right:2px solid #61b522;border-bottom:2px solid #61b522;border-left:2px solid #61b522;}}<\/style><a class=\"kb-button kt-button button kb-btn65610_b6da1c-d1 kt-btn-size-standard kt-btn-width-type-auto kb-btn-global-outline kt-btn-has-text-true kt-btn-has-svg-true wp-block-kadence-singlebtn\" href=\"https:\/\/explore.restek.com\/PFAS\" target=\"_blank\" rel=\"noopener\"><span class=\"kt-btn-inner-text\"><strong>Contact a PFAS Expert<\/strong><\/span><span class=\"kb-svg-icon-wrap kb-svg-icon-fe_arrowRight kt-btn-icon-side-right\"><svg viewBox=\"0 0 24 24\"  fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"  aria-hidden=\"true\"><line x1=\"5\" y1=\"12\" x2=\"19\" y2=\"12\"\/><polyline points=\"12 5 19 12 12 19\"\/><\/svg><\/span><\/a><\/div>\n<\/div><\/div>\n\n<\/div><\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Discover More Solutions for PFAS Analysis!<\/h3>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<style>.wp-block-kadence-advancedbtn.kb-btns43465_157ee7-dd{gap:var(--global-kb-gap-md, 2rem);justify-content:center;align-items:center;}.kt-btns43465_157ee7-dd .kt-button{font-weight:normal;font-style:normal;}.kt-btns43465_157ee7-dd .kt-btn-wrap-0{margin-right:5px;}.wp-block-kadence-advancedbtn.kt-btns43465_157ee7-dd .kt-btn-wrap-0 .kt-button{color:#555555;border-color:#555555;}.wp-block-kadence-advancedbtn.kt-btns43465_157ee7-dd .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns43465_157ee7-dd .kt-btn-wrap-0 .kt-button:focus{color:#ffffff;border-color:#444444;}.wp-block-kadence-advancedbtn.kt-btns43465_157ee7-dd .kt-btn-wrap-0 .kt-button::before{display:none;}.wp-block-kadence-advancedbtn.kt-btns43465_157ee7-dd .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns43465_157ee7-dd .kt-btn-wrap-0 .kt-button:focus{background:#444444;}<\/style>\n<div class=\"wp-block-kadence-advancedbtn kb-buttons-wrap kb-btns43465_157ee7-dd\"><style>ul.menu .wp-block-kadence-advancedbtn .kb-btn43465_d3337a-a8.kb-button{width:initial;}<\/style><a class=\"kb-button kt-button button kb-btn43465_d3337a-a8 kt-btn-size-large kt-btn-width-type-full kb-btn-global-fill kt-btn-has-text-true kt-btn-has-svg-false wp-block-kadence-singlebtn\" href=\"https:\/\/discover.restek.com\/articles\/evar3552\/guide-to-pfas-testing-methods\"><span class=\"kt-btn-inner-text\">Access Other PFAS Methods<\/span><\/a>\n\n<style>ul.menu .wp-block-kadence-advancedbtn .kb-btn43465_a73e5c-80.kb-button{width:initial;}<\/style><a class=\"kb-button kt-button button kb-btn43465_a73e5c-80 kt-btn-size-large kt-btn-width-type-full kb-btn-global-fill kt-btn-has-text-true kt-btn-has-svg-false wp-block-kadence-singlebtn\" href=\"https:\/\/discover.restek.com\/articles\/EVAR3498\/lab-supplies-for-pfas-analysis\/\"><span class=\"kt-btn-inner-text\">Compare Product Lists<\/span><\/a>\n\n<style>ul.menu .wp-block-kadence-advancedbtn .kb-btn43465_1948fe-74.kb-button{width:initial;}<\/style><a class=\"kb-button kt-button button kb-btn43465_1948fe-74 kt-btn-size-large kt-btn-width-type-full kb-btn-global-fill kt-btn-has-text-true kt-btn-has-svg-false wp-block-kadence-singlebtn\" href=\"https:\/\/discover.restek.com\/pfas-analysis\/\"><span class=\"kt-btn-inner-text\">Explore More Technical Resources<\/span><\/a><\/div>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-group hub-fullwidth-container\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><style>.kadence-column43465_8c0726-2f > .kt-inside-inner-col,.kadence-column43465_8c0726-2f > .kt-inside-inner-col:before{border-top-left-radius:16px;border-top-right-radius:16px;border-bottom-right-radius:16px;border-bottom-left-radius:16px;}.kadence-column43465_8c0726-2f > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column43465_8c0726-2f > .kt-inside-inner-col{flex-direction:column;}.kadence-column43465_8c0726-2f > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column43465_8c0726-2f > .kt-inside-inner-col{background-color:var(--global-palette2, #2B6CB0);background-image:url('https:\/\/discover.restek.com\/wp-content\/uploads\/GNLP4243-ad-ezlc-for-PFAS-desktop-1.jpg');background-size:cover;background-position:50% 0%;background-attachment:scroll;background-repeat:no-repeat;}.kadence-column43465_8c0726-2f > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column43465_8c0726-2f{position:relative;}.kadence-column43465_8c0726-2f, .kt-inside-inner-col > .kadence-column43465_8c0726-2f:not(.specificity){margin-top:45px;margin-bottom:10px;}@media all and (max-width: 1024px){.kadence-column43465_8c0726-2f > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column43465_8c0726-2f > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column43465_8c0726-2f kvs-sm-false hub-guttered-centered-container\"><div class=\"kt-inside-inner-col\"><style>.kb-row-layout-id43465_a7b55f-8e > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id43465_a7b55f-8e > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id43465_a7b55f-8e > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);padding-top:48px;padding-right:48px;padding-bottom:48px;padding-left:48px;grid-template-columns:minmax(0, calc(65% - ((var(--global-kb-gap-md, 2rem) * 1 )\/2)))minmax(0, calc(35% - ((var(--global-kb-gap-md, 2rem) * 1 )\/2)));}.kb-row-layout-id43465_a7b55f-8e > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id43465_a7b55f-8e > .kt-row-column-wrap{grid-template-columns:minmax(0, 2fr) minmax(0, 1fr);}}@media all and (max-width: 767px){.kb-row-layout-id43465_a7b55f-8e > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id43465_a7b55f-8e alignnone wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-2-columns kt-row-layout-left-golden kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top\">\n<style>.kadence-column43465_5222a6-fc > .kt-inside-inner-col{display:flex;}.kadence-column43465_5222a6-fc > .kt-inside-inner-col,.kadence-column43465_5222a6-fc > .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-column43465_5222a6-fc > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column43465_5222a6-fc > .kt-inside-inner-col{flex-direction:column;justify-content:center;}.kadence-column43465_5222a6-fc > .kt-inside-inner-col > .aligncenter{width:100%;}.kt-row-column-wrap > .kadence-column43465_5222a6-fc{align-self:center;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column43465_5222a6-fc{align-self:auto;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column43465_5222a6-fc > .kt-inside-inner-col{flex-direction:column;justify-content:center;}.kadence-column43465_5222a6-fc > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column43465_5222a6-fc{position:relative;}@media all and (max-width: 1024px){.kt-row-column-wrap > .kadence-column43465_5222a6-fc{align-self:center;}}@media all and (max-width: 1024px){.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column43465_5222a6-fc{align-self:auto;}}@media all and (max-width: 1024px){.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column43465_5222a6-fc > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 1024px){.kadence-column43465_5222a6-fc > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kt-row-column-wrap > .kadence-column43465_5222a6-fc{align-self:center;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column43465_5222a6-fc{align-self:auto;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column43465_5222a6-fc > .kt-inside-inner-col{flex-direction:column;justify-content:center;}.kadence-column43465_5222a6-fc > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column43465_5222a6-fc\"><div class=\"kt-inside-inner-col\"><\/div><\/div>\n\n\n<style>.kadence-column43465_942be8-3a > .kt-inside-inner-col,.kadence-column43465_942be8-3a > .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-column43465_942be8-3a > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column43465_942be8-3a > .kt-inside-inner-col{flex-direction:column;}.kadence-column43465_942be8-3a > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column43465_942be8-3a > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column43465_942be8-3a{position:relative;}@media all and (max-width: 1024px){.kadence-column43465_942be8-3a > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column43465_942be8-3a > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column43465_942be8-3a\"><div class=\"kt-inside-inner-col\"><style>.wp-block-kadence-advancedheading.kt-adv-heading43465_66903d-de, 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.wp-block-kadence-advancedheading.kt-adv-heading43465_66903d-de[data-kb-block=\"kb-adv-heading43465_66903d-de\"]{font-size:36px;}}<\/style>\n<h2 class=\"kt-adv-heading43465_66903d-de wp-block-kadence-advancedheading has-theme-palette-9-color has-text-color\" data-kb-block=\"kb-adv-heading43465_66903d-de\">Start Saving <br>Time Today<\/h2>\n\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading43465_4df651-b8, .wp-block-kadence-advancedheading.kt-adv-heading43465_4df651-b8[data-kb-block=\"kb-adv-heading43465_4df651-b8\"]{text-align:center;font-size:20px;font-weight:400;font-style:normal;font-family:'Open Sans';color:#dee2e6;}.wp-block-kadence-advancedheading.kt-adv-heading43465_4df651-b8 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading43465_4df651-b8[data-kb-block=\"kb-adv-heading43465_4df651-b8\"] 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-heading43465_4df651-b8 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading43465_4df651-b8[data-kb-block=\"kb-adv-heading43465_4df651-b8\"] img.kb-inline-image{width:150px;vertical-align:baseline;}@media all and (max-width: 767px){.wp-block-kadence-advancedheading.kt-adv-heading43465_4df651-b8, .wp-block-kadence-advancedheading.kt-adv-heading43465_4df651-b8[data-kb-block=\"kb-adv-heading43465_4df651-b8\"]{font-size:16px;}}<\/style>\n<p class=\"kt-adv-heading43465_4df651-b8 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading43465_4df651-b8\">Develop PFAS Methods in Minutes with our Pro&nbsp;<em>EZ<\/em>LC Chromatogram Modeler<\/p>\n\n\n<style>.wp-block-kadence-advancedbtn.kb-btns43465_3d8502-f0{gap:var(--global-kb-gap-xs, 0.5rem 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class=\"wp-block-kadence-column kadence-column43465_43f1fa-0f kvs-lg-false kvs-md-false hub-guttered-centered-container\"><div class=\"kt-inside-inner-col\"><style>.wp-block-kadence-advancedheading.kt-adv-heading43465_a89ca1-3b, .wp-block-kadence-advancedheading.kt-adv-heading43465_a89ca1-3b[data-kb-block=\"kb-adv-heading43465_a89ca1-3b\"]{text-align:center;font-size:48px;line-height:54px;font-weight:400;font-style:normal;font-family:Inter;text-transform:none;}.wp-block-kadence-advancedheading.kt-adv-heading43465_a89ca1-3b mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading43465_a89ca1-3b[data-kb-block=\"kb-adv-heading43465_a89ca1-3b\"] 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-heading43465_a89ca1-3b img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading43465_a89ca1-3b[data-kb-block=\"kb-adv-heading43465_a89ca1-3b\"] img.kb-inline-image{width:150px;vertical-align:baseline;}@media all and (max-width: 767px){.wp-block-kadence-advancedheading.kt-adv-heading43465_a89ca1-3b, .wp-block-kadence-advancedheading.kt-adv-heading43465_a89ca1-3b[data-kb-block=\"kb-adv-heading43465_a89ca1-3b\"]{font-size:36px;}}<\/style>\n<h2 class=\"kt-adv-heading43465_a89ca1-3b wp-block-kadence-advancedheading has-theme-palette-9-color has-text-color\" data-kb-block=\"kb-adv-heading43465_a89ca1-3b\">Start Saving Time Today<\/h2>\n\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading43465_eabf6d-00, .wp-block-kadence-advancedheading.kt-adv-heading43465_eabf6d-00[data-kb-block=\"kb-adv-heading43465_eabf6d-00\"]{text-align:center;font-size:20px;font-weight:400;font-style:normal;font-family:'Open Sans';color:#dee2e6;}.wp-block-kadence-advancedheading.kt-adv-heading43465_eabf6d-00 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading43465_eabf6d-00[data-kb-block=\"kb-adv-heading43465_eabf6d-00\"] 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-heading43465_eabf6d-00 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading43465_eabf6d-00[data-kb-block=\"kb-adv-heading43465_eabf6d-00\"] img.kb-inline-image{width:150px;vertical-align:baseline;}@media all and (max-width: 767px){.wp-block-kadence-advancedheading.kt-adv-heading43465_eabf6d-00, .wp-block-kadence-advancedheading.kt-adv-heading43465_eabf6d-00[data-kb-block=\"kb-adv-heading43465_eabf6d-00\"]{font-size:16px;}}<\/style>\n<p class=\"kt-adv-heading43465_eabf6d-00 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading43465_eabf6d-00\">Develop PFAS Methods in Minutes with our Pro&nbsp;<em>EZ<\/em>LC Chromatogram Modeler<\/p>\n\n\n<style>.wp-block-kadence-advancedbtn.kb-btns43465_724e31-c7{gap:var(--global-kb-gap-xs, 0.5rem );justify-content:center;align-items:center;}.kt-btns43465_724e31-c7 .kt-button{font-weight:normal;font-style:normal;}.kt-btns43465_724e31-c7 .kt-btn-wrap-0{margin-right:5px;}.wp-block-kadence-advancedbtn.kt-btns43465_724e31-c7 .kt-btn-wrap-0 .kt-button{color:#555555;border-color:#555555;}.wp-block-kadence-advancedbtn.kt-btns43465_724e31-c7 .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns43465_724e31-c7 .kt-btn-wrap-0 .kt-button:focus{color:#ffffff;border-color:#444444;}.wp-block-kadence-advancedbtn.kt-btns43465_724e31-c7 .kt-btn-wrap-0 .kt-button::before{display:none;}.wp-block-kadence-advancedbtn.kt-btns43465_724e31-c7 .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns43465_724e31-c7 .kt-btn-wrap-0 .kt-button:focus{background:#444444;}<\/style>\n<div class=\"wp-block-kadence-advancedbtn kb-buttons-wrap 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.kb-btn43465_f70ddf-d1.kb-button{border-top:1px solid #015e9a;border-right:1px solid #015e9a;border-bottom:1px solid #015e9a;border-left:1px solid #015e9a;}}@media all and (max-width: 767px){.wp-block-kadence-advancedbtn .kb-btn43465_f70ddf-d1.kb-button{border-top:1px solid #015e9a;border-right:1px solid #015e9a;border-bottom:1px solid #015e9a;border-left:1px solid #015e9a;}}<\/style><a class=\"kb-button kt-button button kb-btn43465_f70ddf-d1 kt-btn-size-standard kt-btn-width-type-auto kb-btn-global-outline kt-btn-has-text-true kt-btn-has-svg-true wp-block-kadence-singlebtn\" href=\"https:\/\/ez.restek.com\/proezlc\" target=\"_blank\" rel=\"noopener\"><span class=\"kt-btn-inner-text\">www.restek.com\/ezlc<\/span><span class=\"kb-svg-icon-wrap kb-svg-icon-fe_arrowRight kt-btn-icon-side-right\"><svg viewBox=\"0 0 24 24\"  fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"  aria-hidden=\"true\"><line x1=\"5\" y1=\"12\" x2=\"19\" y2=\"12\"\/><polyline points=\"12 5 19 12 12 19\"\/><\/svg><\/span><\/a><\/div>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Simplify your ASTM D7979-20 testing workflow with this high-level overview and convenient list of recommended products for analyzing PFAS in water, sludge, influent, effluent, and wastewater 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