{"id":3303,"date":"2023-01-02T10:46:52","date_gmt":"2023-01-02T08:46:52","guid":{"rendered":"https:\/\/www.vsl.nl\/?page_id=3303"},"modified":"2026-04-15T17:20:07","modified_gmt":"2026-04-15T15:20:07","slug":"support","status":"publish","type":"page","link":"https:\/\/www.vsl.nl\/en\/about-vsl\/support\/","title":{"rendered":"Support"},"content":{"rendered":"

[vc_section full_width=”stretch_row” content_placement=”middle” css=”.vc_custom_1670246207545{background-image: url(https:\/\/www.vsl.nl\/wp-content\/uploads\/2022\/11\/Lab-Foto-WEB-35.jpg?id=2230) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}” el_class=”main_header gradient_header dg-position-realtive”][vc_row equal_height=”yes” content_placement=”middle” el_class=”dg-header–small”][vc_column width=”1\/2″ el_class=”dg-padding-none”][vc_column_text css=”.vc_custom_1672322351306{margin-bottom: 0px !important;padding-bottom: 0px !important;}” el_class=”text-white”]<\/p>\n

Support chemistry<\/h1>\n

VSL underpins its services where possible by participating in key comparisons. It also organises and coordinates key comparisons on request of the Gas Analysis Working Group of the Consultative Committee for Amount of Substance: Metrology in Chemistry and Biology (CCQM-GAWG).[\/vc_column_text][\/vc_column][vc_column width=”1\/2″][\/vc_column][\/vc_row][\/vc_section][vc_section full_width=”stretch_row” disable_element=”yes” el_class=”brand_element_small dg-padding-small” css=”.vc_custom_1776266404984{background-color: #fafafa !important;}”][vc_row][vc_column el_class=”dg-padding-none”][vc_btn title=”About VSL” style=”flat” shape=”square” size=”sm” css=”.vc_custom_1672328401092{margin-bottom: 0px !important;border-radius: 5px !important;}” el_class=”page_btn” link=”url:https%3A%2F%2Fwww.vsl.nl%2Fen%2Fabout-vsl%2F|title:About%20VSL|”][vc_btn title=”About metrology” style=”flat” shape=”square” size=”sm” css=”.vc_custom_1668338709399{margin-bottom: 0px !important;margin-left: 25px !important;border-radius: 5px !important;}” el_class=”page_btn” link=”url:https%3A%2F%2Fwww.vsl.nl%2Fen%2Fabout-vsl%2Fabout-metrology%2F|title:About%20metrology|”][vc_btn title=”Our statutory task” style=”flat” shape=”square” size=”sm” css=”.vc_custom_1668338721023{margin-bottom: 0px !important;margin-left: 25px !important;border-radius: 5px !important;}” el_class=”page_btn” link=”url:https%3A%2F%2Fwww.vsl.nl%2Fen%2Fabout-vsl%2Four-statutory-task%2F|title:Our%20statutory%20task|”][vc_btn title=”Quality” style=”flat” shape=”square” size=”sm” css=”.vc_custom_1672649191690{margin-bottom: 0px !important;margin-left: 25px !important;border-radius: 5px !important;}” el_class=”page_btn” link=”url:https%3A%2F%2Fwww.vsl.nl%2Fen%2Fabout-vsl%2Fquality%2F|title:Quality|”][vc_btn title=”Certificates” style=”flat” shape=”square” size=”sm” css=”.vc_custom_1727257859712{margin-bottom: 0px !important;margin-left: 25px !important;border-radius: 5px !important;}” el_class=”page_btn” link=”url:https%3A%2F%2Fwww.vsl.nl%2Fen%2Fabout-vsl%2Fcertificates%2F|title:Certificates”][vc_btn title=”Support” style=”flat” shape=”square” size=”sm” css=”.vc_custom_1672322328647{margin-bottom: 0px !important;margin-left: 25px !important;border-radius: 5px !important;}” el_class=”page_btn page_btn_active” link=”url:https%3A%2F%2Fwww.vsl.nl%2Fen%2Fabout-vsl%2Fsupport%2F|title:Support|”][\/vc_column][\/vc_row][\/vc_section][vc_section el_class=”dg-padding-mid brand_element_small”][vc_row][vc_column width=”2\/3″ el_class=”full_width_responsive dg-padding-none”][vc_column_text css=”.vc_custom_1672320317553{padding-right: 10% !important;}”]<\/p>\n

Support<\/p>\n

Support to Calibration and Measurement Capabilities<\/h2>\n

VSL underpins its services where possible by participating in key comparisons. It also organises and coordinates key comparisons on request of the Gas Analysis Working Group of the Consultative Committee for Amount of Substance: Metrology in Chemistry and Biology (CCQM-GAWG). Recently coordinated key comparisons include CCQM-K112 Biogas<\/a>, CCQM-K117 Ammoniak in stikstof<\/a> and CCQM-K118 Aardgas<\/a>. All reports of key comparisons are available in the Metrologia Technical Supplement.[\/vc_column_text][vc_column_text]Calibration and Measurement Capabilities (CMCs) relate to performing calibrations (of monitors, gas mixtures), and the preparation and certification of certified or primary reference materials. Not all of VSL\u2019s services can be underpinned directly or indirectly by participating in key comparisons. In those instances, VSL supports its CMCs by other means. Below is an overview given of such evidence, per group of services.[\/vc_column_text][vc_column_text]A general explanation of how VSL extrapolates their results from key comparisons over the entire amount fraction range was published in Metrologia.
\nIf you cannot access the paper through the website, please do not hesitate to contact<\/a> us.[\/vc_column_text][\/vc_column][vc_column width=”1\/3″ el_class=”tablet_expert full_width_responsive”]

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Would you like to know more about our services?<\/h3>\n

Our experts are happy to help.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n\n\t

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Carl van Wijngaarden<\/b>
\nQuality Manager<\/p>\n\n\t\t<\/div>\n\t<\/div>\n\n\t

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\n\t\t\t<\/i> cvanwijngaarden@vsl.nl<\/a>\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section>\r\n<\/div>[\/vc_column][\/vc_row][vc_row el_class=”dg-index-fix dg-padding-small-top”][vc_column width=”5\/6″ el_class=”dg-padding-none full_width_responsive”][vc_column_text]The following groups of CMCs are supported by further evidence:<\/p>\n