{"id":3303,"date":"2025-07-31T13:19:55","date_gmt":"2025-07-31T13:19:55","guid":{"rendered":"https:\/\/discover.restek.com\/?p=3303"},"modified":"2025-12-09T00:08:45","modified_gmt":"2025-12-09T00:08:45","slug":"is-there-a-restek-guard-cartridge-to-go-with-my-uhplc-column","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/it\/faq\/gnot5071\/is-there-a-restek-guard-cartridge-to-go-with-my-uhplc-column","title":{"rendered":"Is there a Restek guard cartridge to go with my UHPLC column?"},"content":{"rendered":"\n

We have guard cartridges and holders available for Raptor 1.8 \u00b5m UHPLC columns. As an alternative for UHPLC, you may find an in-line filter to be beneficial.<\/p>\n\n\n\n

\"UltraShield<\/figure>\n\n\n\n

UltraShield UHPLC Precolumn Filter<\/a><\/p>\n\n\n\n

\"UltraLine<\/figure>\n\n\n\n


UltraLine UHPLC In-Line Filter<\/a><\/p>\n\n\n\n

Similar to our Trident direct guard system, the UltraShield filter screws directly into the column end fitting at the inlet. The UltraLine filter requires a tubing connection on either side; if it is installed between the injector and the column, the EXP coupler<\/a> is recommended.<\/p>\n\n\n\n

The other difference is in the frits, or filters as you may call them. The UltraShield unit has a titanium filter that is not replaceable. Therefore, the whole filter assembly is used as a disposable item. On the other hand, the UltraLine filter has a replaceable stainless-steel filter, and more of them can be ordered as needed.<\/p>\n\n\n\n

Filters in both units have a porosity of 0.5 \u00b5m, and both holder assemblies are leak tight up to a pressure of 15,000 psi. Therefore, they are functionally equivalent.<\/p>\n\n\n\n

The UltraShield filter is compatible with any family and phase of Restek UHPLC columns, whereas the Raptor UHPLC guards are compatible with matching phases of 1.8 \u00b5m Force and 1.9 \u00b5m Pinnacle DB UHPLC columns.<\/p>\n\n\n\n

For more details, see our LC guard column selection guide<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

We have guard cartridges and holders available for Raptor 1.8 \u00b5m UHPLC columns. As an alternative for UHPLC, you may find an in-line filter to be beneficial. UltraShield UHPLC Precolumn Filter UltraLine UHPLC In-Line Filter Similar to our Trident direct guard system, the UltraShield filter screws directly into the column end fitting at the inlet….<\/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":[23],"tags":[2682,2700],"industries-application":[],"post-badge":[],"resource-type":[],"product-library":[],"resource-technique":[],"ppma_author":[414],"class_list":["post-3303","post","type-post","status-publish","format-standard","hentry","category-faq","tag-faq-hplc-and-uhplc","tag-faq-lc-guard-columns"],"acf":[],"taxonomy_info":{"category":[{"value":23,"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\/it\/author\/restek-corporation\/"},"comment_info":0,"category_info":[{"term_id":23,"name":"FAQ","slug":"faq","term_group":0,"term_taxonomy_id":23,"taxonomy":"category","description":"","parent":0,"count":271,"filter":"raw","cat_ID":23,"category_count":271,"category_description":"","cat_name":"FAQ","category_nicename":"faq","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\/it\/wp-json\/wp\/v2\/posts\/3303","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\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/comments?post=3303"}],"version-history":[{"count":4,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/posts\/3303\/revisions"}],"predecessor-version":[{"id":70953,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/posts\/3303\/revisions\/70953"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/media?parent=3303"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/categories?post=3303"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/tags?post=3303"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/industries-application?post=3303"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/post-badge?post=3303"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/resource-type?post=3303"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/product-library?post=3303"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/resource-technique?post=3303"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/ppma_author?post=3303"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}