{"id":3544,"date":"2025-07-31T18:50:25","date_gmt":"2025-07-31T18:50:25","guid":{"rendered":"https:\/\/discover.restek.com\/?p=3544"},"modified":"2025-12-09T00:29:13","modified_gmt":"2025-12-09T00:29:13","slug":"what-is-the-difference-between-treated-and-untreated-cylinders","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/ja\/faq-fr\/gnot4999\/what-is-the-difference-between-treated-and-untreated-cylinders","title":{"rendered":"What is the difference between treated and untreated cylinders?"},"content":{"rendered":"\n<p>Siltek-treated sample cylinders are recommended for the collection, storage, and analysis of ppb levels of sulfur, mercury, or other sensitive compounds. Because these compounds quickly react with stainless-steel surfaces, accurate determination of these compounds is not possible when samples are collected and stored in untreated sample cylinders. Siltek passivation techniques bond an inert layer into the surface of stainless steel, preventing active compounds from reacting with or adsorbing to the steel. Please refer to\u00a0<a href=\"https:\/\/www.restek.com\/articles\/stable-sulfur-and-mercury-sampling-in-refineries\" target=\"_blank\" rel=\"noopener\">this stability study<\/a>\u00a0for additional information.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Siltek-treated sample cylinders are recommended for the collection, storage, and analysis of ppb levels of sulfur, mercury, or other sensitive compounds. Because these compounds quickly react with stainless-steel surfaces, accurate determination of these compounds is not possible when samples are collected and stored in untreated sample cylinders. Siltek passivation techniques bond an inert layer into&#8230;<\/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":[801],"tags":[2677,2694],"industries-application":[],"post-badge":[],"resource-type":[],"product-library":[2443,2451,2450],"resource-technique":[],"ppma_author":[414],"class_list":["post-3544","post","type-post","status-publish","format-standard","hentry","category-faq-fr","tag-faq-air-sampling","tag-faq-gas-sampling","product-library-echantillonnage-dair-et-de-gaz","product-library-sacs-de-prelevement-de-gaz-accessoires","product-library-cylindres-dechantillonnage-accessoires"],"acf":[],"taxonomy_info":{"category":[{"value":801,"label":"FAQ"}],"post_tag":[{"value":2677,"label":"FAQ: Air Sampling"},{"value":2694,"label":"FAQ: Gas Sampling"}],"product-library":[{"value":2443,"label":"\u00c9chantillonnage d'air et de gaz"},{"value":2451,"label":"Sacs de pr\u00e9l\u00e8vement de gaz et accessoires"},{"value":2450,"label":"Cylindres d&#039;\u00e9chantillonnage et accessoires"}]},"featured_image_src_large":false,"author_info":{"display_name":"Restek Corporation","author_link":"https:\/\/discover.restek.com\/ja\/author\/restek-corporation\/"},"comment_info":0,"category_info":[{"term_id":801,"name":"FAQ","slug":"faq-fr","term_group":0,"term_taxonomy_id":801,"taxonomy":"category","description":"","parent":0,"count":271,"filter":"raw","cat_ID":801,"category_count":271,"category_description":"","cat_name":"FAQ","category_nicename":"faq-fr","category_parent":0}],"tag_info":[{"term_id":2677,"name":"FAQ: Air Sampling","slug":"faq-air-sampling","term_group":0,"term_taxonomy_id":2677,"taxonomy":"post_tag","description":"Browse frequently asked questions for air sampling products.","parent":0,"count":39,"filter":"raw"},{"term_id":2694,"name":"FAQ: Gas Sampling","slug":"faq-gas-sampling","term_group":0,"term_taxonomy_id":2694,"taxonomy":"post_tag","description":"Browse frequently asked questions for gas sampling products.","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\/ja\/wp-json\/wp\/v2\/posts\/3544","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/comments?post=3544"}],"version-history":[{"count":3,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/posts\/3544\/revisions"}],"predecessor-version":[{"id":71123,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/posts\/3544\/revisions\/71123"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/media?parent=3544"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/categories?post=3544"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/tags?post=3544"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/industries-application?post=3544"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/post-badge?post=3544"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/resource-type?post=3544"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/product-library?post=3544"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/resource-technique?post=3544"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/ppma_author?post=3544"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}