{"id":3599,"date":"2025-07-31T21:05:57","date_gmt":"2025-07-31T21:05:57","guid":{"rendered":"https:\/\/discover.restek.com\/?p=3599"},"modified":"2025-12-08T23:01:45","modified_gmt":"2025-12-08T23:01:45","slug":"can-i-inject-water-onto-my-column-will-it-damage-the-column","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/fr\/faq-it\/gnot5020\/can-i-inject-water-onto-my-column-will-it-damage-the-column","title":{"rendered":"Can I inject water onto my column? Will it damage the column?"},"content":{"rendered":"\n<p>Injecting small amounts of water (solvent) into a non-polar capillary column will not damage the phase; however, this may not be the case for mid and high-polarity columns.<\/p>\n\n\n\n<p>Several precautions should be taken when water is used as a solvent:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The water is completely vaporized before it enters the column and the water does not re-condense inside the capillary column. If GC oven temperatures are cool enough to allow the water vapor to condense:\n<ul class=\"wp-block-list\">\n<li>Use a\u00a0Polar-Deactivated guard column. This will allow the water to be completely vaporized before it reaches the column.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Do not use cold or heated on-column injection modes. Use only injection modes that vaporize the solvent before it enters the column: split, splitless, or direct injections.<\/li>\n\n\n\n<li>The injection volume should be small: 1\u00b5L or less. Larger volumes will create a backflash, where the expansion volume of the solvent will exceed the volume of the injection port liner. This can lead to poor reproducibility and\/or &#8220;ghost&#8221; peaks.<\/li>\n<\/ul>\n\n\n\n<p>Additional information can be found in our&nbsp;<a href=\"https:\/\/www.restek.com\/articles\/restek-capillary-column-installation-guide\" target=\"_blank\" rel=\"noopener\">Capillary Column Installation Guide<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Injecting small amounts of water (solvent) into a non-polar capillary column will not damage the phase; however, this may not be the case for mid and high-polarity columns. Several precautions should be taken when water is used as a solvent: Additional information can be found in our&nbsp;Capillary Column Installation Guide.<\/p>\n","protected":false},"author":11,"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":[803],"tags":[2678],"industries-application":[],"post-badge":[],"resource-type":[],"product-library":[],"resource-technique":[],"hf_cat_post":[625],"ppma_author":[414],"class_list":["post-3599","post","type-post","status-publish","format-standard","hentry","category-faq-it","tag-faq-capillary-gc-columns"],"acf":[],"taxonomy_info":{"category":[{"value":803,"label":"FAQ"}],"post_tag":[{"value":2678,"label":"FAQ: Capillary GC Columns"}]},"featured_image_src_large":false,"author_info":{"display_name":"Restek Corporation","author_link":"https:\/\/discover.restek.com\/fr\/author\/restek-corporation\/"},"comment_info":0,"category_info":[{"term_id":803,"name":"FAQ","slug":"faq-it","term_group":0,"term_taxonomy_id":803,"taxonomy":"category","description":"","parent":0,"count":271,"filter":"raw","cat_ID":803,"category_count":271,"category_description":"","cat_name":"FAQ","category_nicename":"faq-it","category_parent":0}],"tag_info":[{"term_id":2678,"name":"FAQ: Capillary GC Columns","slug":"faq-capillary-gc-columns","term_group":0,"term_taxonomy_id":2678,"taxonomy":"post_tag","description":"Browse frequently asked questions for capillary GC columns.","parent":0,"count":26,"filter":"raw"}],"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\/3599","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=3599"}],"version-history":[{"count":2,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/3599\/revisions"}],"predecessor-version":[{"id":70083,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/3599\/revisions\/70083"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/media?parent=3599"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/categories?post=3599"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/tags?post=3599"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/industries-application?post=3599"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/post-badge?post=3599"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/resource-type?post=3599"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/product-library?post=3599"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/resource-technique?post=3599"},{"taxonomy":"hf_cat_post","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/hf_cat_post?post=3599"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/ppma_author?post=3599"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}