{"id":76408,"date":"2019-01-19T00:00:00","date_gmt":"2019-01-19T00:00:00","guid":{"rendered":"https:\/\/discover.restek.com\/?p=76408"},"modified":"2026-01-23T23:51:47","modified_gmt":"2026-01-23T23:51:47","slug":"cannabis-residual-solvent-method-development-made-easy-with-free-modeling-software","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/it\/blogs\/gnbl5477\/cannabis-residual-solvent-method-development-made-easy-with-free-modeling-software","title":{"rendered":"Cannabis Residual Solvent Method Development Made Easy with Free Modeling Software"},"content":{"rendered":"\n<p>In a typical cannabis testing laboratory, finding time and resources to improve or develop methods can be scarce.&nbsp; Even in our own applications group, finding time to \u201cquickly\u201d generate data can be a challenge with multiple projects taking place at the same time.&nbsp; However, there\u2019s a tool that can help make this process more efficient and alleviate some of the burdens that you might encounter during this process.<\/p>\n\n\n\n<p>Recently, I received an external inquiry regarding our Cannabis Residual Solvent Mix #1 (cat.# 34105).&nbsp; During the email conversation, I shared a chromatogram and method which Colton developed last year.<\/p>\n\n\n<style>.kb-image76408_429917-cb .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image76408_429917-cb size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"571\" src=\"https:\/\/discover.restek.com\/wp-content\/uploads\/blog-cannabis-residual-solvent-method-development-made-easy-with-free-modeling-software-01-1024x571.png\" alt=\"\" class=\"kb-img wp-image-77582\" title=\"-\" srcset=\"https:\/\/discover.restek.com\/wp-content\/uploads\/blog-cannabis-residual-solvent-method-development-made-easy-with-free-modeling-software-01-1024x571.png 1024w, https:\/\/discover.restek.com\/wp-content\/uploads\/blog-cannabis-residual-solvent-method-development-made-easy-with-free-modeling-software-01-300x167.png 300w, https:\/\/discover.restek.com\/wp-content\/uploads\/blog-cannabis-residual-solvent-method-development-made-easy-with-free-modeling-software-01-768x428.png 768w, https:\/\/discover.restek.com\/wp-content\/uploads\/blog-cannabis-residual-solvent-method-development-made-easy-with-free-modeling-software-01.png 1459w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n<style>.kb-image76408_bed189-60 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image76408_bed189-60 size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"577\" src=\"https:\/\/discover.restek.com\/wp-content\/uploads\/blog-cannabis-residual-solvent-method-development-made-easy-with-free-modeling-software-02-1024x577.png\" alt=\"\" class=\"kb-img wp-image-77588\" title=\"-\" srcset=\"https:\/\/discover.restek.com\/wp-content\/uploads\/blog-cannabis-residual-solvent-method-development-made-easy-with-free-modeling-software-02-1024x577.png 1024w, https:\/\/discover.restek.com\/wp-content\/uploads\/blog-cannabis-residual-solvent-method-development-made-easy-with-free-modeling-software-02-300x169.png 300w, https:\/\/discover.restek.com\/wp-content\/uploads\/blog-cannabis-residual-solvent-method-development-made-easy-with-free-modeling-software-02-768x433.png 768w, https:\/\/discover.restek.com\/wp-content\/uploads\/blog-cannabis-residual-solvent-method-development-made-easy-with-free-modeling-software-02.png 1190w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>After sharing the method, I was asked if we offered a standard for ethylene oxide and had any supporting chromatograms using the same conditions above to show where the compound eluted since our customer wanted to develop a method for California\u2019s residual solvents list.&nbsp; Unfortunately, we didn\u2019t have this chromatogram.&nbsp; To make things worse the instrument needed to generate the chromatogram was running samples for another project.&nbsp; Yet, within minutes of Colton informing me of this news, he generated a model chromatogram containing ethylene oxide using his run conditions.<\/p>\n\n\n<style>.kb-image76408_b5f8f2-3d .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image76408_b5f8f2-3d size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"741\" src=\"https:\/\/discover.restek.com\/wp-content\/uploads\/blog-cannabis-residual-solvent-method-development-made-easy-with-free-modeling-software-03-1024x741.png\" alt=\"\" class=\"kb-img wp-image-77576\" title=\"-\" srcset=\"https:\/\/discover.restek.com\/wp-content\/uploads\/blog-cannabis-residual-solvent-method-development-made-easy-with-free-modeling-software-03-1024x741.png 1024w, https:\/\/discover.restek.com\/wp-content\/uploads\/blog-cannabis-residual-solvent-method-development-made-easy-with-free-modeling-software-03-300x217.png 300w, https:\/\/discover.restek.com\/wp-content\/uploads\/blog-cannabis-residual-solvent-method-development-made-easy-with-free-modeling-software-03-768x556.png 768w, https:\/\/discover.restek.com\/wp-content\/uploads\/blog-cannabis-residual-solvent-method-development-made-easy-with-free-modeling-software-03.png 1057w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>How was this possible?!?!&nbsp; We have Pro&nbsp;<em>EZ<\/em>GC Chromatogram Modeler to thank for this!&nbsp; This free program allows users to spend a little time in the office to save a lot of time in the lab.&nbsp;<\/p>\n\n\n\n<p>And thanks to Colton\u2019s quick thinking we were able to answer our customer\u2019s questions&nbsp;in less than a day.&nbsp; So the next time you\u2019re planning to modify a method or develop a new one, use the<a href=\"https:\/\/ez.restek.com\/proezgc\" data-type=\"link\" data-id=\"https:\/\/ez.restek.com\/proezgc\" target=\"_blank\" rel=\"noopener\"> Restek Pro&nbsp;<em>EZ<\/em>GC Chromatogram Modeler<\/a> to help you get started!<\/p>\n\n\n\n<div style=\"height:100px\" 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\/13868\">                                Catalog No. 13868                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">Colonna capillare GC Rxi-624Sil MS, 30 m, ID 0,25 mm, 1,40 \u00b5m<\/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\/13868\">Esplora Prodotto<\/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\/34105\">                                Catalog No. 34105                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">Solventi Residui #1, 3000 \u03bcg\/mL in N,N-Dimethylacetamide, 1 mL\/ampolla<\/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\/34105\">Esplora Prodotto<\/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\/23280\">                                Catalog No. 23280                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">Liner per iniettore dritto\/SPME Topaz, 1,8 mm x 6,5 x 78,5, per GC Agilent, deattivazione premium, 5 pz.<\/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\/23280\">Esplora Prodotto<\/a>\n                                                    <\/div>\n                    <\/div>\n                            <\/div>\n        <\/div>\n        \n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>In a typical cannabis testing laboratory, finding time and resources to improve or develop methods can be scarce. Even in our own applications group, finding time to &ldquo;quickly&rdquo; generate data can be a challenge with multiple projects taking place at&#8230;<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[9],"tags":[],"industries-application":[],"post-badge":[],"resource-type":[],"product-library":[],"resource-technique":[],"ppma_author":[512],"class_list":["post-76408","post","type-post","status-publish","format-standard","hentry","category-blogs"],"acf":[],"taxonomy_info":{"category":[{"value":9,"label":"Blogs"}]},"featured_image_src_large":false,"author_info":{"display_name":"Brenda Cogan","author_link":"https:\/\/discover.restek.com\/it\/author\/brenda-coganrestek-com\/"},"comment_info":0,"category_info":[{"term_id":9,"name":"Blogs","slug":"blogs","term_group":0,"term_taxonomy_id":9,"taxonomy":"category","description":"","parent":0,"count":444,"filter":"raw","cat_ID":9,"category_count":444,"category_description":"","cat_name":"Blogs","category_nicename":"blogs","category_parent":0}],"tag_info":false,"authors":[{"term_id":512,"user_id":0,"is_guest":1,"slug":"ashlee-gerardi","display_name":"Ashlee Gerardi","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/posts\/76408","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/comments?post=76408"}],"version-history":[{"count":2,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/posts\/76408\/revisions"}],"predecessor-version":[{"id":84419,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/posts\/76408\/revisions\/84419"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/media?parent=76408"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/categories?post=76408"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/tags?post=76408"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/industries-application?post=76408"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/post-badge?post=76408"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/resource-type?post=76408"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/product-library?post=76408"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/resource-technique?post=76408"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/ppma_author?post=76408"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}