{"product_id":"gastec-nitrogen-oxides-nox-detector-tubes-multiple-measurement-ranges","title":"GASTEC Nitrogen Oxides (NOx) Detector Tubes – Multiple Measurement Ranges","description":"\u003cp\u003e\u003cstrong\u003eGASTEC Nitrogen Oxides (NOx) Detector Tubes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGASTEC Nitrogen Oxides Detector Tubes\u003c\/strong\u003e provide a convenient, direct-reading method for measuring nitrogen oxides (NOx) concentrations in air and gas samples. Designed for use with a compatible GASTEC gas sampling pump, these colorimetric detector tubes allow professionals to perform rapid on-site NOx measurements across a broad range of concentrations.\u003c\/p\u003e\n\u003cp\u003eWith available measurement ranges extending from \u003cstrong\u003e0.04–16.5 ppm\u003c\/strong\u003e to \u003cstrong\u003e50–2,500 ppm\u003c\/strong\u003e, GASTEC offers multiple Nitrogen Oxides Detector Tube options for applications ranging from low-level air monitoring and industrial hygiene investigations to higher-concentration industrial and process measurements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose the Nitrogen Oxides Detector Tube for Your Application\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eGASTEC offers multiple Nitrogen Oxides Detector Tubes designed for different NOx concentration ranges. Select the appropriate GASTEC product number based on the anticipated nitrogen oxides concentration and the requirements of your sampling application.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eGASTEC Product Number\u003c\/th\u003e\n\u003cth\u003eNitrogen Oxides Measurement Range\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e11HA\u003c\/td\u003e\n\u003ctd\u003e50–2,500 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e11S\u003c\/td\u003e\n\u003ctd\u003e5–625 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e11L\u003c\/td\u003e\n\u003ctd\u003e0.04–16.5 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDirect-Reading Colorimetric NOx Measurement\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eGASTEC detector tubes use chemical detection reagents that respond to the target gas as a measured volume of sample is drawn through the tube system. The resulting color-change layer provides a visual indication that can be used to determine nitrogen oxides concentration according to the calibrated scale and measurement instructions for the selected GASTEC product number.\u003c\/p\u003e\n\u003cp\u003eThis direct-reading approach provides a practical solution for spot measurements, industrial hygiene surveys, process checks, combustion-related investigations, environmental testing, maintenance, and troubleshooting where NOx concentrations need to be evaluated directly at the sampling location.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOx Detector Tubes for Low to High Concentrations\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor applications requiring sensitive low-level measurements, the \u003cstrong\u003eGASTEC 11L (0.04–16.5 ppm)\u003c\/strong\u003e provides the lowest concentration range in this product selection. This makes it useful when relatively small concentrations of nitrogen oxides need to be measured.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eGASTEC 11S (5–625 ppm)\u003c\/strong\u003e provides a broader intermediate measurement range, while the \u003cstrong\u003eGASTEC 11HA (50–2,500 ppm)\u003c\/strong\u003e extends measurement capabilities to substantially higher NOx concentrations. Together, these three options allow users to select a detector tube that more closely matches the anticipated conditions of the sampling environment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for nitrogen oxides (NOx) measurement\u003c\/li\u003e\n\u003cli\u003eThree GASTEC product and measurement range options available\u003c\/li\u003e\n\u003cli\u003eAvailable ranges from 0.04–16.5 ppm through 50–2,500 ppm\u003c\/li\u003e\n\u003cli\u003eOptions for low, intermediate, and higher NOx concentrations\u003c\/li\u003e\n\u003cli\u003eDirect-reading colorimetric gas measurement method\u003c\/li\u003e\n\u003cli\u003eDesigned for rapid on-site measurements and field screening\u003c\/li\u003e\n\u003cli\u003eCompact and portable gas measurement solution\u003c\/li\u003e\n\u003cli\u003eNo electronic gas sensor or electrical power required at the detector tube\u003c\/li\u003e\n\u003cli\u003eSuitable for professional industrial, environmental, and occupational monitoring\u003c\/li\u003e\n\u003cli\u003eDesigned for use with compatible GASTEC gas sampling equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNitrogen oxides concentration measurement\u003c\/li\u003e\n\u003cli\u003eNOx air monitoring\u003c\/li\u003e\n\u003cli\u003eIndustrial hygiene investigations\u003c\/li\u003e\n\u003cli\u003eWorkplace air monitoring\u003c\/li\u003e\n\u003cli\u003eCombustion-related testing\u003c\/li\u003e\n\u003cli\u003eIndustrial process monitoring\u003c\/li\u003e\n\u003cli\u003eEnvironmental air investigations\u003c\/li\u003e\n\u003cli\u003eManufacturing facilities\u003c\/li\u003e\n\u003cli\u003eBoiler and combustion system investigations\u003c\/li\u003e\n\u003cli\u003eMaintenance and troubleshooting\u003c\/li\u003e\n\u003cli\u003eOccupational exposure investigations\u003c\/li\u003e\n\u003cli\u003eField screening for nitrogen oxides\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant Range Selection Information\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNitrogen oxides concentrations can vary significantly between applications, making selection of the appropriate detector tube important. Individual GASTEC product numbers may have different sampling procedures, sample volumes, pump strokes, sampling times, temperature considerations, pretreatment requirements, interfering gases, and correction factors. Always follow the instructions supplied with the specific GASTEC Nitrogen Oxides Detector Tube being used.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGASTEC Detector Tubes for Professional NOx Measurement\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eActivated Carbon Depot supplies GASTEC detector tubes and compatible gas sampling equipment for industrial hygienists, safety professionals, environmental consultants, laboratories, maintenance personnel, process operators, and industrial facilities. With three Nitrogen Oxides Detector Tube options covering concentrations from 0.04 ppm through 2,500 ppm, users can select the GASTEC product number and measurement range that best matches their NOx testing requirements.\u003c\/p\u003e","brand":"GASTEC","offers":[{"title":"11HA 50–2500 ppm","offer_id":48450223702205,"sku":null,"price":89.5,"currency_code":"USD","in_stock":true},{"title":"11S 5–625 ppm","offer_id":48450223734973,"sku":null,"price":89.5,"currency_code":"USD","in_stock":true},{"title":"11L 0.04–16.5 ppm","offer_id":48450223767741,"sku":null,"price":89.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0664\/1408\/4285\/files\/GASTECNitrogenOxides_NOx_DetectorTubes_MultipleMeasurementRanges.jpg?v=1789486652","url":"https:\/\/activatedcarbondepot.com\/products\/gastec-nitrogen-oxides-nox-detector-tubes-multiple-measurement-ranges","provider":"Activated Carbon Depot","version":"1.0","type":"link"}