{"id":42536,"date":"2018-01-03T05:00:00","date_gmt":"2018-01-03T05:00:00","guid":{"rendered":"https:\/\/discover.restek.com\/uncategorized\/trimming-a-gc-column-to-remove-contamination\/"},"modified":"2026-01-28T17:25:42","modified_gmt":"2026-01-28T17:25:42","slug":"trimming-a-gc-column-to-remove-contamination","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/fr\/videos\/gnav3661\/trimming-a-gc-column-to-remove-contamination","title":{"rendered":"Trimming a GC Column to Remove Contamination"},"content":{"rendered":"\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Trimming a GC Column to Remove Contamination\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/0Mne5U2aqm0?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Description&nbsp;<\/h2>\n\n\n\n<p>The inlet end of our gas chromatography columns can collect a lot of contamination. GC column trimming is the simple process of removing a few centimeters of the inlet end of your analytical column in order to remove contamination. This type of GC column maintenance can be a quick fix to help with contamination problems like tailing or some response variation.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Additional Resources<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.restek.com\/chromablography\/half-the-column-same-chromatogram.-trimming-your-gc-column-and-maintaining-resolution.-\/\" target=\"_blank\" rel=\"noopener\">Half the Column, Same Chromatogram. Trimming your GC Column and Maintaining Resolution<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/ez.restek.com\/ezgc-mtfc?_gl=1*e02weu*_ga*Mjk5NjM0MTczLjE2NTQ1MTk4MjM.*_ga_NEFKXNY78H*MTY4OTE3MjgwMC4zODkuMS4xNjg5MTc3MjM2LjYwLjAuMA..&amp;_ga=2.97993439.1500029236.1688995433-299634173.1654519823\" target=\"_blank\" rel=\"noopener\"><em>EZ<\/em>GC Method Translator and Flow Calculator<\/a><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Restek Recommended Tools &amp; Parts<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.restek.com\/p\/20116\" target=\"_blank\" rel=\"noopener\">Ceramic Scoring Wafer<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Transcript<\/h2>\n\n\n\n<p>Hello, everyone, and welcome to another Restek tip. In this video, we&#8217;re going to be talking about column trimming. It&#8217;s a really simple technique that we can use to remove some contamination from our GC columns. Very straightforward, as well. All we&#8217;re going to do is uninstall our column and chop off about the first 15 centimeters or so. That&#8217;s the area where most of the contamination accumulates on our column, on the inlet side of things.<\/p>\n\n\n\n<p>After we&#8217;ve done that trimming, we can simply re-install our column and proceed as usual. One other note, though. It is important for us to update our instrument software with our new column length.&nbsp;That software uses physical dimensions of the column\u2014ID and length specifically\u2014in order to help regulate pressure and flow. As we trim a column over time, we want to make sure that we keep updating our column length in the software.<\/p>\n\n\n\n<p>With that in mind, that&#8217;s all that&#8217;s involved with trimming a column to remove contamination. That&#8217;s it! Thank you for joining us for this Restek tip.<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>What should you do when your GC column starts to show signs of contamination? Watch this Restek Tip video on trimming your gas chromatography columns.<\/p>\n","protected":false},"author":11,"featured_media":41298,"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":[8],"tags":[],"industries-application":[],"post-badge":[],"resource-type":[565],"product-library":[2372,2384],"resource-technique":[2294],"ppma_author":[414],"class_list":["post-42536","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-videos","resource-type-maintenance","product-library-gas-chromatography-products","product-library-gc-columns","resource-technique-gas-chromatography-gc"],"acf":[],"taxonomy_info":{"category":[{"value":8,"label":"Videos"}],"resource-type":[{"value":565,"label":"Maintenance"}],"product-library":[{"value":2372,"label":"Gas Chromatography Products"},{"value":2384,"label":"GC Columns"}],"resource-technique":[{"value":2294,"label":"Gas Chromatography (GC)"}]},"featured_image_src_large":["https:\/\/discover.restek.com\/wp-content\/uploads\/feature-GNAV3661-1024x536.jpg",1024,536,true],"author_info":{"display_name":"Restek Corporation","author_link":"https:\/\/discover.restek.com\/fr\/author\/restek-corporation\/"},"comment_info":0,"category_info":[{"term_id":8,"name":"Videos","slug":"videos","term_group":0,"term_taxonomy_id":8,"taxonomy":"category","description":"","parent":0,"count":136,"filter":"raw","cat_ID":8,"category_count":136,"category_description":"","cat_name":"Videos","category_nicename":"videos","category_parent":0}],"tag_info":false,"authors":[{"term_id":414,"user_id":11,"is_guest":0,"slug":"restek-corporation","display_name":"Restek Corporation","avatar_url":{"url":"https:\/\/discover.restek.com\/wp-content\/uploads\/Restek_Favicon_300x300.jpg","url2x":"https:\/\/discover.restek.com\/wp-content\/uploads\/Restek_Favicon_300x300.jpg"},"0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/42536","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/comments?post=42536"}],"version-history":[{"count":5,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/42536\/revisions"}],"predecessor-version":[{"id":85608,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/42536\/revisions\/85608"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/media\/41298"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/media?parent=42536"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/categories?post=42536"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/tags?post=42536"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/industries-application?post=42536"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/post-badge?post=42536"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/resource-type?post=42536"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/product-library?post=42536"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/resource-technique?post=42536"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/ppma_author?post=42536"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}