{"id":40208,"date":"2026-01-14T15:09:40","date_gmt":"2026-01-14T15:09:40","guid":{"rendered":"https:\/\/calibration.consulting\/product\/isotech-17724-mercury-triple-point-cell\/"},"modified":"2026-02-09T08:50:06","modified_gmt":"2026-02-09T08:50:06","slug":"isotech-17724-mercury-triple-point-cell","status":"publish","type":"product","link":"https:\/\/calibration.consulting\/en\/product\/isotech-17724-mercury-triple-point-cell\/","title":{"rendered":"Isotech 17724 Mercury Triple Point Cell"},"content":{"rendered":"<p><!--StartFragment --><\/p>\n<p>The <a href=\"https:\/\/calibration.consulting\/en\/supplier\/isotech\/\" target=\"_blank\" rel=\"noopener\">Isotech<\/a> Mercury Triple Point Cell is a primary ITS\u201190 standard with a triple point of \u201338.8344 \u00b0C, designed for laboratories requiring the highest confidence in low\u2011temperature metrology. Housed in a rugged, sealed stainless\u2011steel enclosure, the cell allows the mercury triple point to be realised safely, reliably and with exceptional reproducibility. With an uncertainty of just 0.000200 \u00b0C (0.2 mK), it is among the most accurate fixed\u2011point standards available today. Its 7N\u2011purity metal, proven construction and decades of international use make it a reference trusted by national laboratories worldwide.<\/p>\n<h3>Developed with NIST \u2014 a legacy of precision<\/h3>\n<p>The modern embodiment of the Mercury Triple Point Cell was developed more than twenty years ago through close collaboration between Henry Sostmann and Dr. Furukawa of the former NBS (now NIST).<\/p>\n<p>Isotech continues to manufacture the cells to the original specifications:<\/p>\n<ul>\n<li>&gt; identical physical dimensions<\/li>\n<li>&gt; identical materials<\/li>\n<li>&gt; identical metal purity<\/li>\n<li>&gt; identical supplier<\/li>\n<\/ul>\n<p>The mercury is quadruple\u2011distilled, leaving only 10\u201315 parts per billion of impurities. Even after twenty years, opened cells have been found to remain &gt;99.99995% pure, demonstrating the long\u2011term stability of the design.<\/p>\n<p>In international intercomparisons, Isotech cells have consistently performed within the uncertainty limits of national laboratories.<\/p>\n<h3>Operation and plateau realisation<\/h3>\n<p>The Mercury Cell can be realised in two ways:<\/p>\n<ol>\n<li>In an Isotech stirred liquid bath, such as the Hydra or 915, producing plateau durations of up to one week.<\/li>\n<li>In the dedicated Mercury Triple Point Apparatus, which avoids the need for liquids and is widely used in NMIs and commercial calibration labs.<\/li>\n<\/ol>\n<p>Both methods provide a stable, flat and highly reproducible plateau.<\/p>\n<h3>Construction and durability<\/h3>\n<p>The cell is built entirely from stainless steel, ensuring:<\/p>\n<ul>\n<li>&gt; mechanical robustness<\/li>\n<li>&gt; safe containment of the mercury<\/li>\n<li>&gt; long\u2011term reliability and transport safety<\/li>\n<\/ul>\n<p>The metal column has a depth of 200 mm, ideal for immersing precision thermometers.<\/p>\n<p>The Isotech Mercury Triple Point Cell is a highly accurate, stable and durable ITS\u201190 fixed\u2011point standard. With its 7N\u2011purity metal, proven design and decades of successful international use, it is an essential reference for laboratories requiring absolute confidence in low\u2011temperature calibration.<\/p>\n<p><!--EndFragment --><\/p>\n","protected":false},"excerpt":{"rendered":"<ul class=\"product--features\">\n<li>Uncertainty 0.000200\u00b0C<\/li>\n<li>Rugged Stainless Steel Construction<\/li>\n<li>7N Pure<\/li>\n<\/ul>\n","protected":false},"featured_media":40205,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_seopress_titles_title":"Isotech 17724 Mercury Triple Point Cell","_seopress_titles_desc":"The Isotech Mercury Triple Point Cell is a primary ITS\u201190 standard with a triple point of \u201338.8344 \u00b0C, designed for laboratories requiring the highest confidence in low\u2011temperature metrology.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"none","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"both","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[]},"product_brand":[],"product_cat":[249,263,268],"product_tag":[],"class_list":["post-40208","product","type-product","status-publish","has-post-thumbnail","product_cat-calibration-en","product_cat-temperature-calibration","product_cat-primary-standards","first","instock","shipping-taxable","product-type-simple"],"acf":[],"_links":{"self":[{"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/product\/40208","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/comments?post=40208"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/media\/40205"}],"wp:attachment":[{"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/media?parent=40208"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/product_brand?post=40208"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/product_cat?post=40208"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/product_tag?post=40208"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}