{"id":3297,"date":"2026-03-27T10:45:38","date_gmt":"2026-03-27T14:45:38","guid":{"rendered":"https:\/\/dev26.lecowebtest.com\/news\/\/"},"modified":"2026-06-12T16:46:49","modified_gmt":"2026-06-12T20:46:49","slug":"reliable-helium-alternatives","status":"publish","type":"post","link":"https:\/\/dev26.lecowebtest.com\/fr\/news\/reliable-helium-alternatives\/","title":{"rendered":"Alternatives fiables \u00e0 l'h\u00e9lium pour l'analyse en laboratoire"},"content":{"rendered":"<div class=\"wp-block-group is-style-leco-vertical-margin-top has-global-padding is-layout-constrained wp-container-core-group-is-layout-875e403b wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-1ffe0ea6 wp-block-group-is-layout-flex\">\n<p class=\"wp-block-paragraph\">Published on<\/p>\n\n\n<div style=\"line-height:1;margin-top:12px;margin-left:6px\" class=\"wp-block-post-date has-custom-1-font-size\"><time datetime=\"2026-03-27T10:45:38-04:00\">27 mars 2026<\/time><\/div><\/div>\n\n\n<h1 class=\"is-style-h2-style wp-block-post-title\">Alternatives fiables \u00e0 l'h\u00e9lium pour l'analyse en laboratoire<\/h1><\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\"><figure class=\"is-style-rounded wp-block-post-featured-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1800\" height=\"600\" src=\"https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/Web-Blog-Image-Helium.png\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Cargo ship with shipping crates\" style=\"object-fit:cover;\" srcset=\"https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/Web-Blog-Image-Helium.png 1800w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/Web-Blog-Image-Helium-300x100.png 300w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/Web-Blog-Image-Helium-1024x341.png 1024w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/Web-Blog-Image-Helium-768x256.png 768w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/Web-Blog-Image-Helium-1536x512.png 1536w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/Web-Blog-Image-Helium-18x6.png 18w\" sizes=\"auto, (max-width: 1800px) 100vw, 1800px\"><\/figure><\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-container-core-group-is-layout-1ea9787f wp-block-group-is-layout-constrained\" style=\"margin-top:48px\">\n<div class=\"leco-share-article align-left wp-block-create-block-leco-share-article\">\n\t<div class=\"share-article-wrapper\">\n\t\t<button class=\"share-article-button\" data-url=\"https:\/\/dev26.lecowebtest.com\/fr\/news\/reliable-helium-alternatives\/\" aria-label=\"Share Article\">\n\t\t\tShare Article\t\t<\/button>\n\t\t<span class=\"share-article-copied\" aria-live=\"polite\" aria-atomic=\"true\">\n\t\t\tArticle Link Copied\t\t<\/span>\n\t<\/div>\n<\/div>\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background has-base-100-color has-base-100-background-color is-style-default\" style=\"margin-top:60px;margin-bottom:60px\">\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-container-core-group-is-layout-1ea9787f wp-block-group-is-layout-constrained\" style=\"margin-top:48px\">\n<p class=\"wp-block-paragraph\" style=\"padding-bottom:var(--wp--preset--spacing--60)\">Labs that rely on helium gas are facing a major crisis\u2026unless they have LECO instruments. Due to the military conflict in the Middle East, Qatar\u2019s Ras Laffan Industrial City, the world\u2019s largest helium production hub, providing one-third of the world\u2019s helium, has shut down operations. To make matters worse, the Strait of Hormuz, the shipping lane used to export helium, has also been closed, meaning even pre-filled helium containers are stuck with no viable route to customers. Naturally, the price of helium has now risen dramatically; most spot prices have doubled. A critical scarcity issue is looming as the world must now operate on roughly 5.2 million cubic meters per month less of helium.<\/p>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-bottom:var(--wp--preset--spacing--70)\">\n<h2 class=\"wp-block-heading is-style-h2-style\">Why Helium\u00a0Cost and Supply Matters to Labs\u00a0<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Although many people may recognize helium as the gas that fills party balloons, it plays a critical role in much more serious matters. Helium has unique properties, like an extremely low boiling point, inertness, and high thermal conductivity, which makes it indispensable in several high-tech applications.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example, research labs may use helium as a carrier gas when performing elemental analyses or gas chromatography-mass spectrometry, which is used to separate and identify chemical compounds in samples. But research labs are often government-funded and run under strict budgets, so the price hike on helium could mean labs have to pause their research until everything falls back under control, which could be months or longer. Even well-funded labs could suffer if the supply is simply too stretched to equip the lab with what they need, as medical uses are given top priority. This could have a serious impact on accuracy and compliance with regulated methods.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-bottom:var(--wp--preset--spacing--70)\">\n<h2 class=\"wp-block-heading is-style-h2-style\">The Consequences Reach Farther<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">When helium becomes unavailable or prohibitively expensive, the ripple effects are immediate and far-reaching. It affects more than just balloons and research labs:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Delayed Medical Diagnostics<\/strong>: MRI machines, which rely on helium to cool their superconducting magnets, may be taken offline, delaying critical scans.<\/li>\n\n\n\n<li><strong>Semiconductor Bottlenecks<\/strong>: Chip shortages could worsen, impacting everything from smartphones to electric vehicles and AI infrastructure.<\/li>\n\n\n\n<li><strong>Industrial Disruption<\/strong>: Welding, aerospace, and fiber optics manufacturing face rising costs and potential production halts.<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading is-style-h2-style\">LECO\u2019s Solution: Instruments That Don\u2019t Rely on Helium<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Amidst this pending crisis, LECO offers a practical and forward-thinking solution. This marks the 5th major helium supply crisis since 2006, and it\u2019s likely there will be more after this. Helium supply is concentrated to just a few regions, meaning that any time there is a disruption to one of these, it can create a large effect on the industry. That\u2019s why we designed our innovative analytical instruments to operate using alternative carrier gases.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Depending on the instrument, alternative gases such as nitrogen, argon, or hydrogen may be used in place of helium. These gases are abundant, cost-effective, and less prone to the geopolitical volatility that plagues helium supply chains.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">LECO\u2019s helium-free options ensure that operations stay online, efficient, and future-proof in a world where helium is becoming increasingly scarce and expensive. This flexibility is no longer a luxury\u2014it\u2019s a necessity. If your lab or facility is feeling the pressure of helium scarcity, now is the time to explore alternatives. This isn\u2019t the first helium shortage, and it won\u2019t be the last. Is your lab prepared?<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-container-core-group-is-layout-1ea9787f wp-block-group-is-layout-constrained\" style=\"margin-top:48px\">\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background has-base-100-color has-base-100-background-color is-style-default\" style=\"margin-top:60px;margin-bottom:60px\">\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\">LECO Instruments Supporting Non-Helium Carrier Gases<\/h2>\n\n\n\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-67eca248 wp-block-group-is-layout-flex\">\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\">Below, explore how LECO instruments support alternative carrier gasses:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"#btx\">Pegasus BT and BTX GC-TOFMS<\/a><\/li>\n\n\n\n<li><a href=\"#hrt\" data-type=\"internal\" data-id=\"#hrt\">Pegasus HRT GCxGC-TOFMS<\/a><\/li>\n\n\n\n<li><a href=\"#28\" data-type=\"internal\" data-id=\"#28\">LECO 828 and 928 Elemental Analyzers<\/a><\/li>\n\n\n\n<li><a href=\"#36\" data-type=\"internal\" data-id=\"#36\">LECO 736 and 836 Inert Gas Fusion Analyzers<\/a><\/li>\n\n\n\n<li><a href=\"#603\" data-type=\"internal\" data-id=\"#603\">LECO DH603 : Dosage de l&#x27;hydrog\u00e8ne<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background has-base-100-color has-base-100-background-color is-style-default\" style=\"margin-top:60px;margin-bottom:60px\">\n<\/div>\n\n\n\n<div id=\"btx\" class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">Pegasus BT &amp; BTX<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large is-style-rounded-full-width\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/laboratory-scientist-placing-sample-leco-pegasus-btx-gcms-1024x576.webp\" alt=\"Le scientifique charge l&#039;\u00e9chantillon dans l&#039;autoloader GC-MS\" class=\"wp-image-3124\" srcset=\"https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/laboratory-scientist-placing-sample-leco-pegasus-btx-gcms-1024x576.webp 1024w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/laboratory-scientist-placing-sample-leco-pegasus-btx-gcms-300x169.webp 300w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/laboratory-scientist-placing-sample-leco-pegasus-btx-gcms-768x432.webp 768w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/laboratory-scientist-placing-sample-leco-pegasus-btx-gcms-18x10.webp 18w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/laboratory-scientist-placing-sample-leco-pegasus-btx-gcms.webp 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Pegasus BT models along with Pegasus BTX support helium or hydrogen as a carrier gas. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">BT models require a retrofit kit. Performance on hydrogen is on-par with helium. Pegasus BT series meet full sensitivity specs with either gas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">BTX models are designed for seamless helium-to-hydrogen use. The Pegasus BTX series maintains trace-level sensitivity with either helium or hydrogen carrier gas, a rare capability in GC-MS. No hardware changes beyond standard setup are necessary.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Read more about hydrogen as a carrier gas in Pegasus BT and BTX benchtop gc-tofms:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pegasus BT: <a href=\"https:\/\/dev26.lecowebtest.com\/fr\/documents\/203-821-651\/\" data-type=\"document\" data-id=\"1058\">Tea tree essential oils quality analysis<\/a><\/li>\n\n\n\n<li style=\"line-height:2\">Pegasus BTX: <a href=\"https:\/\/dev26.lecowebtest.com\/fr\/documents\/203-821-694\/\" data-type=\"document\" data-id=\"1099\">Ginger essential oils analysis<\/a><\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background has-base-100-color has-base-100-background-color is-style-default\" style=\"margin-top:60px;margin-bottom:60px\">\n<\/div>\n\n\n\n<div id=\"hrt\" class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">Pegasus HRT<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large is-style-rounded-full-width\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-pegasus-hrt-high-resolution-gc-tof-ms-1024x576.webp\" alt=\"LECO Pegasus GC-TOF-MS haute r\u00e9solution\" class=\"wp-image-3264\" srcset=\"https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-pegasus-hrt-high-resolution-gc-tof-ms-1024x576.webp 1024w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-pegasus-hrt-high-resolution-gc-tof-ms-300x169.webp 300w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-pegasus-hrt-high-resolution-gc-tof-ms-768x432.webp 768w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-pegasus-hrt-high-resolution-gc-tof-ms-18x10.webp 18w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-pegasus-hrt-high-resolution-gc-tof-ms.webp 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Pegasus HRT models support hydrogen as a carrier gas as well as helium.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Due to hydrogen\u2019s flammability, strict safety protocols should be followed. Hydrogen usage is not recommended in instruments and configurations where gas could accumulate (e.g., very long, vertical flight tubes). <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pegasus HRT instruments utilize Folded Flight Path technology, eliminating this concern.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Read about hydrogen as a carrier gas in Pegasus HRT high resolution gc-tofms:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pegasus HRT4D: <a href=\"https:\/\/dev26.lecowebtest.com\/fr\/documents\/sa-asms23-lpss-310\/\" data-type=\"document\" data-id=\"3012\">GC-MS Analysis with Hydrogen Carrier Gas<\/a><\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background has-base-100-color has-base-100-background-color is-style-default\" style=\"margin-top:60px;margin-bottom:60px\">\n<\/div>\n\n\n\n<div id=\"28\" class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">828 &amp; 928 Series<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full is-style-rounded-full-width\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" src=\"https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-cn928-elemental-analyzer.jpg\" alt=\"Technicien de laboratoire utilisant l&#x27;analyseur de carbone et d&#x27;azote LECO s\u00e9rie 928\" class=\"wp-image-2635\" srcset=\"https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-cn928-elemental-analyzer.jpg 1280w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-cn928-elemental-analyzer-300x169.jpg 300w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-cn928-elemental-analyzer-1024x576.jpg 1024w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-cn928-elemental-analyzer-768x432.jpg 768w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-cn928-elemental-analyzer-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">LECO 828 and 928 Series analyzers support argon as an alternative carrier gas to helium. Helium remains preferred for low-level nitrogen determination. Due to a small thermal conductivity difference (TCD), argon operation does raise the nitrogen detection limit, which slightly reduces low-range precision. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Switching gas types is simple: update the method and flow settings \u2013 no hardware changes are necessary. Users have the option to select a larger aliquot loop in the analysis method to improve precision.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Read about using argon as a carrier gas in the 928 Series:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CN928: <a href=\"https:\/\/dev26.lecowebtest.com\/fr\/documents\/203-821-684\/\" data-type=\"document\" data-id=\"1089\">D\u00e9termination de la teneur en carbone et en azote dans le noir de carbone et le graphite<\/a><\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background has-base-100-color has-base-100-background-color is-style-default\" style=\"margin-top:60px;margin-bottom:60px\">\n<\/div>\n\n\n\n<div id=\"36\" class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">736 &amp; 836 Series<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full is-style-rounded-full-width\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" src=\"https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-on836-oxygen-nitrogen-elemental-analyzer.webp\" alt=\"Analyseur \u00e9l\u00e9mentaire LECO ON836 pour l&#x27;oxyg\u00e8ne et l&#x27;azote\" class=\"wp-image-3496\" srcset=\"https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-on836-oxygen-nitrogen-elemental-analyzer.webp 1280w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-on836-oxygen-nitrogen-elemental-analyzer-300x169.webp 300w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-on836-oxygen-nitrogen-elemental-analyzer-1024x576.webp 1024w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-on836-oxygen-nitrogen-elemental-analyzer-768x432.webp 768w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-on836-oxygen-nitrogen-elemental-analyzer-18x10.webp 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">LECO inert gas fusion analyzers for oxygen and nitrogen in inorganic materials (e.g.\u00a0models ON736, ON836) traditionally use helium as the carrier gas for the preferred TCD when measuring nitrogen. With argon, low-level nitrogen precision is slightly lessened.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">736 and 836 models can run on argon, provided the dual-purpose TCD is installed. Once added, switching from helium to argon is a one-time setup change. Both gases are supported in Cornerstone software (select via \u201cGas Type\u201d setting).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When using argon, the furnace operates at a higher termperature, producing more soot. More frequent maintenance (such as filter changes and cleaning) is required.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Read about using argon as a carrier gas in the 836 Series:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ONH836: <a href=\"https:\/\/dev26.lecowebtest.com\/fr\/documents\/203-821-601\/\" data-type=\"document\" data-id=\"1009\">Comparing argon and helium carrier gas to analyze metal alloys<\/a><\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background has-base-100-color has-base-100-background-color is-style-default\" style=\"margin-top:60px;margin-bottom:60px\">\n<\/div>\n\n\n\n<div id=\"603\" class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">DH603<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full is-style-rounded-full-width\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" src=\"https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-dh603-hydrogen-determination.webp\" alt=\"LECO DH603 : Dosage de l&#x27;hydrog\u00e8ne\" class=\"wp-image-3382\" srcset=\"https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-dh603-hydrogen-determination.webp 1280w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-dh603-hydrogen-determination-300x169.webp 300w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-dh603-hydrogen-determination-1024x576.webp 1024w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-dh603-hydrogen-determination-768x432.webp 768w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/03\/leco-dh603-hydrogen-determination-18x10.webp 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">LECO DH603 measures diffusible and residual hydrogen in metals by hot extraction. It does not use helium as a carrier gas during analysis. Nitrogen is utilized as the purge and carrier gas in the DH603 TCD system.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A small helium dose is used only for calibration and system checks, to introduce a known hydrogen quantity via a helium-hydrogen mix.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In routine operation, the furnace is purged with nitrogen and any hydrogen released from the sample is carried to a TCD that references against the nitrogen background. This design avoids flammable gas in the instrument entirely.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Read about how the DH603 operates:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DH603: <a href=\"https:\/\/dev26.lecowebtest.com\/fr\/documents\/203-821-376\/\" data-type=\"document\" data-id=\"840\">Hydrogen determination in steel samples using DH603<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-container-core-group-is-layout-7d5f9c92 wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background has-base-100-color has-base-100-background-color is-style-default\" style=\"margin-top:60px;margin-bottom:60px\">\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading is-style-h4-style\">Nouvelles connexes<\/h2>\n\n\n\n<div class=\"wp-block-query is-layout-flow wp-block-query-is-layout-flow\"><ul class=\"columns-3 wp-block-post-template is-layout-grid wp-container-core-post-template-is-layout-1d17308c wp-block-post-template-is-layout-grid\"><li class=\"wp-block-post post-4219 post type-post status-publish format-standard has-post-thumbnail hentry category-news instrument-model-58 core-analysis-type-carbon application-type-environmental application-type-soil-analysis product-line-elemental-analysis\">\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><figure style=\"aspect-ratio:16\/9\" class=\"wp-block-post-featured-image\"><a href=\"https:\/\/dev26.lecowebtest.com\/fr\/news\/role-of-toc-in-regenerative-agriculture\/\" target=\"_self\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" src=\"https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/08\/two-farmers-in-red-discuss-soil.webp\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"The Importance of Analyzing Total Organic Carbon in Soil in Regenerative Agriculture\" style=\"width:100%;height:100%;object-fit:cover;\" srcset=\"https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/08\/two-farmers-in-red-discuss-soil.webp 1280w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/08\/two-farmers-in-red-discuss-soil-300x169.webp 300w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/08\/two-farmers-in-red-discuss-soil-1024x576.webp 1024w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/08\/two-farmers-in-red-discuss-soil-768x432.webp 768w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/08\/two-farmers-in-red-discuss-soil-18x10.webp 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\"><\/a><\/figure>\n\n<h4 style=\"font-style:normal;font-weight:300\" class=\"has-link-color wp-elements-25e6d450634c6f6ce866507b40ad7ad3 wp-block-post-title has-text-color has-dm-8-color has-medium-font-size has-rothek-font-family\"><a href=\"https:\/\/dev26.lecowebtest.com\/fr\/news\/role-of-toc-in-regenerative-agriculture\/\" target=\"_self\">The Importance of Analyzing Total Organic Carbon in Soil in Regenerative Agriculture<\/a><\/h4>\n\n<div class=\"wp-block-post-date\"><time datetime=\"2026-08-05T08:16:00-04:00\">5 ao\u00fbt 2026<\/time><\/div><\/div>\n\n<\/li><li class=\"wp-block-post post-7015 post type-post status-publish format-standard has-post-thumbnail hentry category-news\">\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><figure style=\"aspect-ratio:16\/9\" class=\"wp-block-post-featured-image\"><a href=\"https:\/\/dev26.lecowebtest.com\/fr\/news\/thank-you-2026-summer-interns\/\" target=\"_self\"><img loading=\"lazy\" decoding=\"async\" width=\"1800\" height=\"660\" src=\"https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/07\/Intern-Day-Photo-2026.jpg\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Thank You, 2026 Summer Interns!\" style=\"width:100%;height:100%;object-fit:cover;\" srcset=\"https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/07\/Intern-Day-Photo-2026.jpg 1800w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/07\/Intern-Day-Photo-2026-300x110.jpg 300w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/07\/Intern-Day-Photo-2026-1024x375.jpg 1024w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/07\/Intern-Day-Photo-2026-768x282.jpg 768w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/07\/Intern-Day-Photo-2026-1536x563.jpg 1536w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/07\/Intern-Day-Photo-2026-18x7.jpg 18w\" sizes=\"auto, (max-width: 1800px) 100vw, 1800px\"><\/a><\/figure>\n\n<h4 style=\"font-style:normal;font-weight:300\" class=\"has-link-color wp-elements-25e6d450634c6f6ce866507b40ad7ad3 wp-block-post-title has-text-color has-dm-8-color has-medium-font-size has-rothek-font-family\"><a href=\"https:\/\/dev26.lecowebtest.com\/fr\/news\/thank-you-2026-summer-interns\/\" target=\"_self\">Thank You, 2026 Summer Interns!<\/a><\/h4>\n\n<div class=\"wp-block-post-date\"><time datetime=\"2026-07-30T14:00:00-04:00\">30 juillet 2026<\/time><\/div><\/div>\n\n<\/li><li class=\"wp-block-post post-6807 post type-post status-publish format-standard has-post-thumbnail hentry category-news instrument-model-60 core-analysis-type-sulfur application-type-high-performance-materials application-type-metals-ores product-line-elemental-analysis\">\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><figure style=\"aspect-ratio:16\/9\" class=\"wp-block-post-featured-image\"><a href=\"https:\/\/dev26.lecowebtest.com\/fr\/news\/sulfur-and-superalloys-the-844-series\/\" target=\"_self\"><img loading=\"lazy\" decoding=\"async\" width=\"1800\" height=\"600\" src=\"https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/07\/underside-of-jet-engine-commercial-aircraft.png\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Superalliages et soufre : m\u00eame des traces peuvent \u00eatre pr\u00e9judiciables\" style=\"width:100%;height:100%;object-fit:cover;\" srcset=\"https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/07\/underside-of-jet-engine-commercial-aircraft.png 1800w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/07\/underside-of-jet-engine-commercial-aircraft-300x100.png 300w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/07\/underside-of-jet-engine-commercial-aircraft-1024x341.png 1024w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/07\/underside-of-jet-engine-commercial-aircraft-768x256.png 768w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/07\/underside-of-jet-engine-commercial-aircraft-1536x512.png 1536w, https:\/\/dev26.lecowebtest.com\/wp-content\/uploads\/2026\/07\/underside-of-jet-engine-commercial-aircraft-18x6.png 18w\" sizes=\"auto, (max-width: 1800px) 100vw, 1800px\"><\/a><\/figure>\n\n<h4 style=\"font-style:normal;font-weight:300\" class=\"has-link-color wp-elements-25e6d450634c6f6ce866507b40ad7ad3 wp-block-post-title has-text-color has-dm-8-color has-medium-font-size has-rothek-font-family\"><a href=\"https:\/\/dev26.lecowebtest.com\/fr\/news\/sulfur-and-superalloys-the-844-series\/\" target=\"_self\">Superalliages et soufre : m\u00eame des traces peuvent \u00eatre pr\u00e9judiciables<\/a><\/h4>\n\n<div class=\"wp-block-post-date\"><time datetime=\"2026-07-17T11:33:01-04:00\">17 juillet 2026<\/time><\/div><\/div>\n\n<\/li><\/ul><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>With global helium supplies shrinking and prices doubling, lab continuity is at risk. Learn how LECO instruments offer seamless transitions to alternative carrier gases without sacrificing analytical precision.<\/p>","protected":false},"author":9,"featured_media":3916,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"instrument-model":[55,57,59,61,70,92,90,95],"core-analysis-type":[20,27,24,23],"application-type":[9,37,35],"product-line":[14,11],"class_list":["post-3297","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","instrument-model-55","instrument-model-57","instrument-model-59","instrument-model-61","instrument-model-dh603","instrument-model-bt","instrument-model-btx","instrument-model-hrt4d","core-analysis-type-carbon","core-analysis-type-gc-mass-spectrometry","core-analysis-type-hydrogen","core-analysis-type-nitrogen","application-type-aroma-flavor-fragrance","application-type-metals-ores","application-type-protein-analysis","product-line-elemental-analysis","product-line-mass-spectrometry"],"_links":{"self":[{"href":"https:\/\/dev26.lecowebtest.com\/fr\/wp-json\/wp\/v2\/posts\/3297","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dev26.lecowebtest.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dev26.lecowebtest.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dev26.lecowebtest.com\/fr\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/dev26.lecowebtest.com\/fr\/wp-json\/wp\/v2\/comments?post=3297"}],"version-history":[{"count":0,"href":"https:\/\/dev26.lecowebtest.com\/fr\/wp-json\/wp\/v2\/posts\/3297\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dev26.lecowebtest.com\/fr\/wp-json\/wp\/v2\/media\/3916"}],"wp:attachment":[{"href":"https:\/\/dev26.lecowebtest.com\/fr\/wp-json\/wp\/v2\/media?parent=3297"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dev26.lecowebtest.com\/fr\/wp-json\/wp\/v2\/categories?post=3297"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dev26.lecowebtest.com\/fr\/wp-json\/wp\/v2\/tags?post=3297"},{"taxonomy":"instrument-model","embeddable":true,"href":"https:\/\/dev26.lecowebtest.com\/fr\/wp-json\/wp\/v2\/instrument-model?post=3297"},{"taxonomy":"core-analysis-type","embeddable":true,"href":"https:\/\/dev26.lecowebtest.com\/fr\/wp-json\/wp\/v2\/core-analysis-type?post=3297"},{"taxonomy":"application-type","embeddable":true,"href":"https:\/\/dev26.lecowebtest.com\/fr\/wp-json\/wp\/v2\/application-type?post=3297"},{"taxonomy":"product-line","embeddable":true,"href":"https:\/\/dev26.lecowebtest.com\/fr\/wp-json\/wp\/v2\/product-line?post=3297"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}