The cap frit on the Level 1 and Level 3 Trident filter end fitting will catch larger particulates and maximize the life of the guard cartridge. Porosity is chosen based on the nature of the sample matrix and, in some cases, the nature of the mobile phase mixture. A frit with a porosity of 2 \u00b5m can be used in most cases and is the standard size when ordered. A 0.5 \u00b5m frit offers more protection for samples that are not prefiltered or that lack cleanup during sample preparation. Smaller porosity may also be more beneficial when using a 3 \u00b5m particle size analytical column or when using a mobile phase that contains higher levels of buffer salts.<\/p>\n","protected":false},"excerpt":{"rendered":"
The cap frit on the Level 1 and Level 3 Trident filter end fitting will catch larger particulates and maximize the life of the guard cartridge. Porosity is chosen based on the nature of the sample matrix and, in some cases, the nature of the mobile phase mixture. A frit with a porosity of 2…<\/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":[802],"tags":[2682,2700],"industries-application":[],"post-badge":[],"resource-type":[],"product-library":[],"resource-technique":[],"hf_cat_post":[625],"ppma_author":[414],"class_list":["post-3308","post","type-post","status-publish","format-standard","hentry","category-faq-de","tag-faq-hplc-and-uhplc","tag-faq-lc-guard-columns"],"acf":[],"taxonomy_info":{"category":[{"value":802,"label":"FAQ"}],"post_tag":[{"value":2682,"label":"FAQ: HPLC and UHPLC"},{"value":2700,"label":"FAQ: LC Guard Columns"}]},"featured_image_src_large":false,"author_info":{"display_name":"Restek Corporation","author_link":"https:\/\/discover.restek.com\/es\/author\/restek-corporation\/"},"comment_info":0,"category_info":[{"term_id":802,"name":"FAQ","slug":"faq-de","term_group":0,"term_taxonomy_id":802,"taxonomy":"category","description":"","parent":0,"count":271,"filter":"raw","cat_ID":802,"category_count":271,"category_description":"","cat_name":"FAQ","category_nicename":"faq-de","category_parent":0}],"tag_info":[{"term_id":2682,"name":"FAQ: HPLC and UHPLC","slug":"faq-hplc-and-uhplc","term_group":0,"term_taxonomy_id":2682,"taxonomy":"post_tag","description":"Browse frequently asked questions for HPLC and UHPLC products.","parent":0,"count":61,"filter":"raw"},{"term_id":2700,"name":"FAQ: LC Guard Columns","slug":"faq-lc-guard-columns","term_group":0,"term_taxonomy_id":2700,"taxonomy":"post_tag","description":"Browse frequently asked questions for LC guard columns.","parent":0,"count":6,"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\/es\/wp-json\/wp\/v2\/posts\/3308","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=3308"}],"version-history":[{"count":3,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/posts\/3308\/revisions"}],"predecessor-version":[{"id":71410,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/posts\/3308\/revisions\/71410"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/media?parent=3308"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/categories?post=3308"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/tags?post=3308"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/industries-application?post=3308"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/post-badge?post=3308"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/resource-type?post=3308"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/product-library?post=3308"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/resource-technique?post=3308"},{"taxonomy":"hf_cat_post","embeddable":true,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/hf_cat_post?post=3308"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/es\/wp-json\/wp\/v2\/ppma_author?post=3308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}