It depends on the type of sampling that is being performed. For sub-slab sampling, where the sampling tube may be just 1 meter, then it is generally not necessary. However, if sampling is being done from a well or drilled bore hole, then using a sampler with a purge port and purging the sample line is recommended.<\/p>\n","protected":false},"excerpt":{"rendered":"
It depends on the type of sampling that is being performed. For sub-slab sampling, where the sampling tube may be just 1 meter, then it is generally not necessary. However, if sampling is being done from a well or drilled bore hole, then using a sampler with a purge port and purging the sample line…<\/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":[800],"tags":[2677,2696],"industries-application":[],"post-badge":[],"resource-type":[],"product-library":[2407,2413],"resource-technique":[],"ppma_author":[414],"class_list":["post-3569","post","type-post","status-publish","format-standard","hentry","category-faq-zh","tag-faq-air-sampling","tag-faq-soil-gas-sampling","product-library-air-gas-sampling-products-zh","product-library-canisters-accessories-zh"],"acf":[],"taxonomy_info":{"category":[{"value":800,"label":"FAQ"}],"post_tag":[{"value":2677,"label":"FAQ: Air Sampling"},{"value":2696,"label":"FAQ: Soil Gas Sampling"}],"product-library":[{"value":2407,"label":"\u7a7a\u6c14\u548c\u6c14\u4f53\u91c7\u6837\u4ea7\u54c1"},{"value":2413,"label":"\u91c7\u6837\u7f50\u548c\u914d\u4ef6"}]},"featured_image_src_large":false,"author_info":{"display_name":"Restek Corporation","author_link":"https:\/\/discover.restek.com\/de\/author\/restek-corporation\/"},"comment_info":0,"category_info":[{"term_id":800,"name":"FAQ","slug":"faq-zh","term_group":0,"term_taxonomy_id":800,"taxonomy":"category","description":"","parent":0,"count":271,"filter":"raw","cat_ID":800,"category_count":271,"category_description":"","cat_name":"FAQ","category_nicename":"faq-zh","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":2696,"name":"FAQ: Soil Gas Sampling","slug":"faq-soil-gas-sampling","term_group":0,"term_taxonomy_id":2696,"taxonomy":"post_tag","description":"Browse frequently asked questions for soil gas sampling products.","parent":0,"count":5,"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\/de\/wp-json\/wp\/v2\/posts\/3569","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/comments?post=3569"}],"version-history":[{"count":2,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/posts\/3569\/revisions"}],"predecessor-version":[{"id":70420,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/posts\/3569\/revisions\/70420"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/media?parent=3569"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/categories?post=3569"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/tags?post=3569"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/industries-application?post=3569"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/post-badge?post=3569"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/resource-type?post=3569"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/product-library?post=3569"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/resource-technique?post=3569"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/ppma_author?post=3569"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}