{"id":48492,"date":"2016-10-31T14:30:00","date_gmt":"2016-10-31T14:30:00","guid":{"rendered":"https:\/\/discover.restek.com\/uncategorized\/a-brief-introduction-to-diatosorb-w\/"},"modified":"2025-10-23T18:52:06","modified_gmt":"2025-10-23T18:52:06","slug":"a-brief-introduction-to-diatosorb-w","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/it\/blogs\/gnbl4566\/a-brief-introduction-to-diatosorb-w","title":{"rendered":"A brief introduction to DiatoSorb-W"},"content":{"rendered":"\n
\"diatosorb\"<\/figure>\n\n\n\n

.<\/p>\n\n\n\n

DiatoSorb-W is a diatomaceous earth material that Restek will sell in packed columns and as a coated packing material (% loading with a liquid phase of your choice), which will replace Chromosorb-W products\/packings. For those of you who may not know, the \u201cW\u201d stands for \u201cwhite\u201d, and is simply the color of the untreated, uncoated material.<\/p>\n\n\n\n

If your method references USP S1A, or Chromosorb-W\/AW (acid-washed), you will request\/receive DiatoSorb-W\/AW unless the material is designated as DMDCS (or DMCS) treated\/deactivated, in which case you will receive DiatoSorb-W\/HP.<\/p>\n\n\n\n

If your method references USP S1NS, or Chromosorb-W\/NAW (non-acid washed), you will receive\/request DiatoSorb-W\/NAW.<\/p>\n\n\n\n

In summary:<\/p>\n\n\n\n

USP S1A<\/strong><\/p>\n\n\n\n

In need of Chromosorb-W\/AW<\/strong>, request DiatoSorb-W\/AW<\/strong><\/p>\n\n\n\n

In need of Chromosorb-W\/AW-DMDCS<\/strong>, request DiatoSorb-W\/HP<\/strong><\/p>\n\n\n\n

USP S1NS<\/strong><\/p>\n\n\n\n

In need of Chromosorb-W\/NAW<\/strong>, request DiatoSorb-W\/NAW<\/strong><\/p>\n\n\n\n

Acronyms:<\/p>\n\n\n\n

W = white<\/p>\n\n\n\n

AW = acid washed<\/p>\n\n\n\n

NAW = non-acid washed<\/p>\n\n\n\n

HP = high performance<\/p>\n\n\n\n

DMDCS = dimethyldichlorosilane (this is a deactivation treatment reagent). It may also be referred to as DMCS (dimethylchlorosilane).<\/p>\n\n\n\n

For packed columns containing Silcoport-W<\/strong>, the name will remain the same but the starting material will now be DiatoSorb-W instead of Chromosorb-W.  The proprietary deactivation used for past and present Silcoport-W packings will remain the same.  Silcoport-W carries the USP designation of S1A.<\/p>\n\n\n\n

For packed columns containing Chromosorb-W\/HP<\/strong>, you will request\/receive DiatoSorb-W\/HP<\/strong>.  Note, Chromosorb-W\/HP is known as both USP S1A and USP S1AB.<\/p>\n\n\n\n

To receive a quote for a packed column or packing, please complete the Custom Packed\/Micropacked Column Request Form<\/a> and a customer service\/sales support representative will respond within one business day (Monday-Friday).<\/p>\n\n\n\n

Please note:<\/strong><\/em> DiatoSorb-W diatomaceous earth materials are not to be confused with other packings, such as Chromosorb P* (Pink crushed firebrick) or Chromosorb porous polymers**.<\/p>\n\n\n\n

*Chromosorb P, P\/AW, P\/NAW, P\/AW-DMDCS<\/p>\n\n\n\n

**Chromosorb 101, 102, 103, 105, 106, 107, 108<\/p>\n","protected":false},"excerpt":{"rendered":"

DiatoSorb-W is a diatomaceous earth material that Restek will sell in packed columns and as a coated packing material (% loading with a liquid phase of your choice), which will replace Chromosorb-W products\/packings. For those of you who may…<\/p>\n","protected":false},"author":2,"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":[2294],"hf_cat_post":[623],"ppma_author":[582],"class_list":["post-48492","post","type-post","status-publish","format-standard","hentry","category-blogs","resource-technique-gas-chromatography-gc"],"acf":[],"taxonomy_info":{"category":[{"value":9,"label":"Blogs"}],"resource-technique":[{"value":2294,"label":"Gas Chromatography (GC)"}]},"featured_image_src_large":false,"author_info":{"display_name":"Patrick Gallagher","author_link":"https:\/\/discover.restek.com\/it\/author\/patrick-gallagherrestek-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":442,"filter":"raw","cat_ID":9,"category_count":442,"category_description":"","cat_name":"Blogs","category_nicename":"blogs","category_parent":0}],"tag_info":false,"authors":[{"term_id":582,"user_id":0,"is_guest":1,"slug":"alan-sensue","display_name":"Alan Sensue","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\/48492","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\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/comments?post=48492"}],"version-history":[{"count":2,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/posts\/48492\/revisions"}],"predecessor-version":[{"id":56630,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/posts\/48492\/revisions\/56630"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/media?parent=48492"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/categories?post=48492"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/tags?post=48492"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/industries-application?post=48492"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/post-badge?post=48492"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/resource-type?post=48492"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/product-library?post=48492"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/resource-technique?post=48492"},{"taxonomy":"hf_cat_post","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/hf_cat_post?post=48492"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/it\/wp-json\/wp\/v2\/ppma_author?post=48492"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}