{"id":51705,"date":"2014-07-10T00:00:00","date_gmt":"2014-07-10T00:00:00","guid":{"rendered":"https:\/\/discover.restek.com\/uncategorized\/how-dirty-are-you-part-2pipet-bulbs-the-answer\/"},"modified":"2026-01-28T15:54:03","modified_gmt":"2026-01-28T15:54:03","slug":"how-dirty-are-you-part-2pipet-bulbs-the-answer","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/zh-hans\/blogs-ja\/gnbl4692\/how-dirty-are-you-part-2pipet-bulbs-the-answer","title":{"rendered":"How Dirty Are You? Part 2\u2026Pipet Bulbs…The Answer"},"content":{"rendered":"\n

Check out the first How Dirty Are You?<\/em> blog about Parafilm<\/a>.<\/p>\n\n\n\n

The How Dirty Are You?<\/em> pipet bulb blog<\/a> showed some interesting data\u2026mainly that I need to clean my pipet bulbs and periodically replace them. I am happy to report that I have changed my pipet bulb twice since and even do some solvent rinses.<\/p>\n\n\n\n

The question I posed in the initial blog was about a high intensity peak found when a latex bulb was rinsed with acetonitrile. The question I asked was what type of common additive was responsible for producing such a high signal\u2026<\/p>\n\n\n\n

Was it a Dye, Antioxidant or UV Stabilizer?<\/p>\n\n\n\n

Some people indicated that they thought it was a phthalate. This is a very good guess based on the numerous times phthalates appear in blank samples, but in this case the compound was identified as butylated hydroxytoluene (BHT)<\/a>.<\/p>\n\n\n\n

\"butylated<\/figure>\n\n\n\n

BHT is an antioxidant compound that is used in everything from rubber to food, pharmaceuticals…even embalming fluid! This stuff is everywhere.<\/p>\n\n\n\n

\"Food<\/figure>\n\n\n\n
\"Another<\/figure>\n\n\n\n
\"Lotion<\/figure>\n\n\n\n
\"Chromatogram<\/figure>\n\n\n\n
<\/div>\n","protected":false},"excerpt":{"rendered":"

Check out the answers to the first How Dirty Are You? blog about Parafilm®. This How Dirty Are You? blog is all about pipet bulbs. Our lab has 14 people and we have at least a few types of pipet bulbs for both…<\/p>\n","protected":false},"author":5,"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":[794],"tags":[],"industries-application":[],"post-badge":[],"resource-type":[],"product-library":[],"resource-technique":[2294],"hf_cat_post":[623],"ppma_author":[594],"class_list":["post-51705","post","type-post","status-publish","format-standard","hentry","category-blogs-ja","resource-technique-gas-chromatography-gc"],"acf":[],"taxonomy_info":{"category":[{"value":794,"label":"Blogs"}],"resource-technique":[{"value":2294,"label":"Gas Chromatography (GC)"}]},"featured_image_src_large":false,"author_info":{"display_name":"Brenda Cogan","author_link":"https:\/\/discover.restek.com\/zh-hans\/author\/brenda-coganrestek-com\/"},"comment_info":0,"category_info":[{"term_id":794,"name":"Blogs","slug":"blogs-ja","term_group":0,"term_taxonomy_id":794,"taxonomy":"category","description":"","parent":0,"count":442,"filter":"raw","cat_ID":794,"category_count":442,"category_description":"","cat_name":"Blogs","category_nicename":"blogs-ja","category_parent":0}],"tag_info":false,"authors":[{"term_id":594,"user_id":0,"is_guest":1,"slug":"julie-kowalski","display_name":"Julie Kowalski","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\/zh-hans\/wp-json\/wp\/v2\/posts\/51705","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/discover.restek.com\/zh-hans\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/discover.restek.com\/zh-hans\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/zh-hans\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/zh-hans\/wp-json\/wp\/v2\/comments?post=51705"}],"version-history":[{"count":4,"href":"https:\/\/discover.restek.com\/zh-hans\/wp-json\/wp\/v2\/posts\/51705\/revisions"}],"predecessor-version":[{"id":85333,"href":"https:\/\/discover.restek.com\/zh-hans\/wp-json\/wp\/v2\/posts\/51705\/revisions\/85333"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/zh-hans\/wp-json\/wp\/v2\/media?parent=51705"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/zh-hans\/wp-json\/wp\/v2\/categories?post=51705"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/zh-hans\/wp-json\/wp\/v2\/tags?post=51705"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/zh-hans\/wp-json\/wp\/v2\/industries-application?post=51705"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/zh-hans\/wp-json\/wp\/v2\/post-badge?post=51705"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/zh-hans\/wp-json\/wp\/v2\/resource-type?post=51705"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/zh-hans\/wp-json\/wp\/v2\/product-library?post=51705"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/zh-hans\/wp-json\/wp\/v2\/resource-technique?post=51705"},{"taxonomy":"hf_cat_post","embeddable":true,"href":"https:\/\/discover.restek.com\/zh-hans\/wp-json\/wp\/v2\/hf_cat_post?post=51705"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/zh-hans\/wp-json\/wp\/v2\/ppma_author?post=51705"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}