{"id":25444,"date":"2025-07-24T09:51:34","date_gmt":"2025-07-24T07:51:34","guid":{"rendered":"https:\/\/www.vsl.nl\/?p=25444"},"modified":"2025-08-29T09:32:55","modified_gmt":"2025-08-29T07:32:55","slug":"new-proficiency-test-for-mercury","status":"publish","type":"post","link":"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/","title":{"rendered":"First Proficiency Test for Mercury on Sorbent Tubes Now Open for Registration"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_section full_width=&#8221;stretch_row&#8221; content_placement=&#8221;middle&#8221; css=&#8221;.vc_custom_1753343528321{background-image: url(https:\/\/www.vsl.nl\/wp-content\/uploads\/2025\/07\/metrologie-kwik-scaled.jpg?id=25447) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}&#8221; el_class=&#8221;main_header gradient_header dg-position-realtive&#8221;][vc_row equal_height=&#8221;yes&#8221; content_placement=&#8221;middle&#8221; el_class=&#8221;dg-header&#8211;small&#8221;][vc_column width=&#8221;5\/6&#8243; el_class=&#8221;dg-padding-none full_width_responsive&#8221;][vc_column_text css=&#8221;.vc_custom_1756452773362{margin-bottom: 0px !important;padding-bottom: 0px !important;}&#8221; el_class=&#8221;text-white&#8221;]<ins class=\"dg-post--date\" datetime=\"2025-08-29T07:23:56+00:00\">Published on July 24th 2025<\/ins><\/p>\n<h1>First Proficiency Test for Mercury on Sorbent Tubes Now Open for Registration<\/h1>\n<p>[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/6&#8243;][\/vc_column][\/vc_row][\/vc_section][vc_section el_class=&#8221;dg-padding-mid&#8221;][vc_row equal_height=&#8221;yes&#8221; content_placement=&#8221;top&#8221;][vc_column el_class=&#8221;full_width_responsive dg-padding-none&#8221;][vc_column_text css=&#8221;&#8221;]<\/p>\n<p class=\"header_subtext\">News<\/p>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row equal_height=&#8221;yes&#8221; content_placement=&#8221;top&#8221;][vc_column el_class=&#8221;full_width_responsive dg-padding-none&#8221;][vc_column_text css=&#8221;&#8221;]<em>VSL is pleased to announce the launch of its first proficiency test (PT) for mercury (Hg) measurement on sorbent tubes.<\/em><\/p>\n<h2>Why Monitor Mercury?<\/h2>\n<p>Mercury is ubiquitously present in the atmosphere, making the monitoring of atmospheric and emission-source Hg concentrations a global necessity. In recent years, industries have been required to implement suitable monitoring equipment and report their emissions to relevant authorities. Accurate and reliable measurements are only possible with proper calibration of monitoring equipment.<\/p>\n<h2>Ensuring Reliable Measurements<\/h2>\n<p>Accurate results depend on properly calibrated measurement equipment. Over the past decade, VSL has invested in developing primary reference materials and calibration methods for gaseous mercury concentrations, all traceable to the International System of Units (SI). Comparisons between VSL\u2019s primary gas standards and mercury calibration methods maintained at other institutes have been performed using sorbent traps. These intercomparisons have proven essential for establishing metrological traceability to SI units.<\/p>\n<h2>About the Proficiency Test<\/h2>\n<p>This new proficiency test offers laboratories and industrial sites the opportunity to demonstrate their competence in measuring mercury concentrations, benchmark their performance, and ensure compliance with international standards.<br \/>\nIf you would like to register or want to know more about this, please note that registration for this proficiency test is open until 1 November, 2025.[\/vc_column_text][vc_btn title=&#8221;Schrijf je hier in&#8221; style=&#8221;flat&#8221; shape=&#8221;square&#8221; color=&#8221;primary&#8221; align=&#8221;left&#8221; css=&#8221;&#8221; link=&#8221;url:https%3A%2F%2Fwww.vsl.nl%2Fen%2Fthemes%2Fregistration-proficiency-test-chemistry%2F%3Ftype%3Dmercury&#8221;][\/vc_column][\/vc_row][\/vc_section]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>VSL is pleased to announce the launch of its first proficiency test (PT) for mercury (Hg) measurement on sorbent tubes.<\/p>\n","protected":false},"author":5,"featured_media":25447,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[44],"tags":[],"class_list":["post-25444","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-44","description-off"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>First Proficiency Test for Mercury on Sorbent Tubes Now Open for Registration - VSL<\/title>\n<meta name=\"description\" content=\"VSL is pleased to announce the launch of its first proficiency test (PT) for mercury (Hg) measurement on sorbent tubes.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"First Proficiency Test for Mercury on Sorbent Tubes Now Open for Registration - VSL\" \/>\n<meta property=\"og:description\" content=\"VSL is pleased to announce the launch of its first proficiency test (PT) for mercury (Hg) measurement on sorbent tubes.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/\" \/>\n<meta property=\"og:site_name\" content=\"VSL\" \/>\n<meta property=\"article:published_time\" content=\"2025-07-24T07:51:34+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-29T07:32:55+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.vsl.nl\/wp-content\/uploads\/2025\/07\/metrologie-kwik-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1440\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Pieter Verschuren\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Pieter Verschuren\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/\"},\"author\":{\"name\":\"Pieter Verschuren\",\"@id\":\"https:\/\/www.vsl.nl\/#\/schema\/person\/886986aca8ed307cea27136bd60d7079\"},\"headline\":\"First Proficiency Test for Mercury on Sorbent Tubes Now Open for Registration\",\"datePublished\":\"2025-07-24T07:51:34+00:00\",\"dateModified\":\"2025-08-29T07:32:55+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/\"},\"wordCount\":412,\"image\":{\"@id\":\"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.vsl.nl\/wp-content\/uploads\/2025\/07\/metrologie-kwik-scaled.jpg\",\"articleSection\":[\"News\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/\",\"url\":\"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/\",\"name\":\"First Proficiency Test for Mercury on Sorbent Tubes Now Open for Registration - VSL\",\"isPartOf\":{\"@id\":\"https:\/\/www.vsl.nl\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.vsl.nl\/wp-content\/uploads\/2025\/07\/metrologie-kwik-scaled.jpg\",\"datePublished\":\"2025-07-24T07:51:34+00:00\",\"dateModified\":\"2025-08-29T07:32:55+00:00\",\"author\":{\"@id\":\"https:\/\/www.vsl.nl\/#\/schema\/person\/886986aca8ed307cea27136bd60d7079\"},\"description\":\"VSL is pleased to announce the launch of its first proficiency test (PT) for mercury (Hg) measurement on sorbent tubes.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/#primaryimage\",\"url\":\"https:\/\/www.vsl.nl\/wp-content\/uploads\/2025\/07\/metrologie-kwik-scaled.jpg\",\"contentUrl\":\"https:\/\/www.vsl.nl\/wp-content\/uploads\/2025\/07\/metrologie-kwik-scaled.jpg\",\"width\":2560,\"height\":1440},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.vsl.nl\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"First Proficiency Test for Mercury on Sorbent Tubes Now Open for Registration\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.vsl.nl\/#website\",\"url\":\"https:\/\/www.vsl.nl\/\",\"name\":\"VSL\",\"description\":\"Nationaal Metrologisch Instituut\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.vsl.nl\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.vsl.nl\/#\/schema\/person\/886986aca8ed307cea27136bd60d7079\",\"name\":\"Pieter Verschuren\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"First Proficiency Test for Mercury on Sorbent Tubes Now Open for Registration - VSL","description":"VSL is pleased to announce the launch of its first proficiency test (PT) for mercury (Hg) measurement on sorbent tubes.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/","og_locale":"en_US","og_type":"article","og_title":"First Proficiency Test for Mercury on Sorbent Tubes Now Open for Registration - VSL","og_description":"VSL is pleased to announce the launch of its first proficiency test (PT) for mercury (Hg) measurement on sorbent tubes.","og_url":"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/","og_site_name":"VSL","article_published_time":"2025-07-24T07:51:34+00:00","article_modified_time":"2025-08-29T07:32:55+00:00","og_image":[{"width":2560,"height":1440,"url":"https:\/\/www.vsl.nl\/wp-content\/uploads\/2025\/07\/metrologie-kwik-scaled.jpg","type":"image\/jpeg"}],"author":"Pieter Verschuren","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Pieter Verschuren","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/#article","isPartOf":{"@id":"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/"},"author":{"name":"Pieter Verschuren","@id":"https:\/\/www.vsl.nl\/#\/schema\/person\/886986aca8ed307cea27136bd60d7079"},"headline":"First Proficiency Test for Mercury on Sorbent Tubes Now Open for Registration","datePublished":"2025-07-24T07:51:34+00:00","dateModified":"2025-08-29T07:32:55+00:00","mainEntityOfPage":{"@id":"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/"},"wordCount":412,"image":{"@id":"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/#primaryimage"},"thumbnailUrl":"https:\/\/www.vsl.nl\/wp-content\/uploads\/2025\/07\/metrologie-kwik-scaled.jpg","articleSection":["News"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/","url":"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/","name":"First Proficiency Test for Mercury on Sorbent Tubes Now Open for Registration - VSL","isPartOf":{"@id":"https:\/\/www.vsl.nl\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/#primaryimage"},"image":{"@id":"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/#primaryimage"},"thumbnailUrl":"https:\/\/www.vsl.nl\/wp-content\/uploads\/2025\/07\/metrologie-kwik-scaled.jpg","datePublished":"2025-07-24T07:51:34+00:00","dateModified":"2025-08-29T07:32:55+00:00","author":{"@id":"https:\/\/www.vsl.nl\/#\/schema\/person\/886986aca8ed307cea27136bd60d7079"},"description":"VSL is pleased to announce the launch of its first proficiency test (PT) for mercury (Hg) measurement on sorbent tubes.","breadcrumb":{"@id":"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/#primaryimage","url":"https:\/\/www.vsl.nl\/wp-content\/uploads\/2025\/07\/metrologie-kwik-scaled.jpg","contentUrl":"https:\/\/www.vsl.nl\/wp-content\/uploads\/2025\/07\/metrologie-kwik-scaled.jpg","width":2560,"height":1440},{"@type":"BreadcrumbList","@id":"https:\/\/www.vsl.nl\/en\/news\/new-proficiency-test-for-mercury\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.vsl.nl\/en\/"},{"@type":"ListItem","position":2,"name":"First Proficiency Test for Mercury on Sorbent Tubes Now Open for Registration"}]},{"@type":"WebSite","@id":"https:\/\/www.vsl.nl\/#website","url":"https:\/\/www.vsl.nl\/","name":"VSL","description":"Nationaal Metrologisch Instituut","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.vsl.nl\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/www.vsl.nl\/#\/schema\/person\/886986aca8ed307cea27136bd60d7079","name":"Pieter Verschuren"}]}},"_links":{"self":[{"href":"https:\/\/www.vsl.nl\/en\/wp-json\/wp\/v2\/posts\/25444","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vsl.nl\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vsl.nl\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vsl.nl\/en\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vsl.nl\/en\/wp-json\/wp\/v2\/comments?post=25444"}],"version-history":[{"count":0,"href":"https:\/\/www.vsl.nl\/en\/wp-json\/wp\/v2\/posts\/25444\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.vsl.nl\/en\/wp-json\/wp\/v2\/media\/25447"}],"wp:attachment":[{"href":"https:\/\/www.vsl.nl\/en\/wp-json\/wp\/v2\/media?parent=25444"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vsl.nl\/en\/wp-json\/wp\/v2\/categories?post=25444"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vsl.nl\/en\/wp-json\/wp\/v2\/tags?post=25444"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}