{"id":3542,"date":"2025-07-31T18:47:36","date_gmt":"2025-07-31T18:47:36","guid":{"rendered":"https:\/\/discover.restek.com\/?p=3542"},"modified":"2025-12-09T00:23:13","modified_gmt":"2025-12-09T00:23:13","slug":"what-is-a-pi-marked-or-tped-gas-sample-cylinder","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/fr\/faq\/gnot4998\/what-is-a-pi-marked-or-tped-gas-sample-cylinder","title":{"rendered":"What is a “-PI” marked or TPED gas sample cylinder?"},"content":{"rendered":"\n

To comply with the European Union Transportation of Pressurized Equipment Directive<\/a> (TPED), Restek offers \u201c-PI\u201d marked cylinders for use in European Union (EU) countries. The mathematical Pi mark is required to be stamped into the cylinder (metal) if the cylinder is sold into an EU country.<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

To comply with the European Union Transportation of Pressurized Equipment Directive (TPED), Restek offers \u201c-PI\u201d marked cylinders for use in European Union (EU) countries. The mathematical Pi mark is required to be stamped into the cylinder (metal) if the cylinder is sold into an EU country.<\/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":[2677,2694],"industries-application":[],"post-badge":[],"resource-type":[],"product-library":[2443,2451],"resource-technique":[],"ppma_author":[414],"class_list":["post-3542","post","type-post","status-publish","format-standard","hentry","category-faq","tag-faq-air-sampling","tag-faq-gas-sampling","product-library-echantillonnage-dair-et-de-gaz","product-library-sacs-de-prelevement-de-gaz-accessoires"],"acf":[],"taxonomy_info":{"category":[{"value":23,"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"}]},"featured_image_src_large":false,"author_info":{"display_name":"Restek Corporation","author_link":"https:\/\/discover.restek.com\/fr\/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":268,"filter":"raw","cat_ID":23,"category_count":268,"category_description":"","cat_name":"FAQ","category_nicename":"faq","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":33,"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"},"author_category":"1","first_name":"Restek","last_name":"Corporation","user_url":"","job_title":"Chromatography Products and Solutions","description":"Restek is a leading provider of chromatography columns, accessories, and certified reference materials. 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