{"product_id":"msa-safety-0021-0018-true-spot-smoke-scale","title":"Msa Safety 0021-0018 True Spot Smoke Scale","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe MSA SAFETY 0021-0018 is a smoke scale designed for use with True Spot smoke test sets. It provides a standardized reference card for comparing combustion flue gas soot levels against graduated smoke density readings. Combustion technicians and HVAC service professionals use this scale to evaluate the results of a smoke spot test, helping determine whether a burner is operating within acceptable efficiency and emissions parameters. The 0021-0018 is a direct-use accessory that integrates into the True Spot smoke testing workflow without additional tools or calibration steps.\u003c\/p\u003e\u003cp\u003eThis smoke scale is used during routine combustion analysis on oil-fired heating equipment, including residential and light commercial boilers and furnaces. It is a standard reference tool for HVAC technicians performing annual tune-ups, efficiency testing, or emissions checks on oil burner systems. The scale allows the technician to visually compare the collected soot sample against the printed density gradient to assign a numerical smoke spot reading.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eStandardized smoke density reference scale for True Spot smoke test sets\u003c\/li\u003e\n\u003cli\u003eUsed for visual comparison of soot samples from oil-fired combustion equipment\u003c\/li\u003e\n\u003cli\u003eSupports accurate smoke spot number assignment during combustion analysis\u003c\/li\u003e\n\u003cli\u003eCompact, direct-use format requires no calibration or additional instruments\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with MSA Bacharach True Spot smoke test sets. No additional compatible model numbers were specified in the product data.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis accessory is handled by qualified HVAC or combustion technicians during flue gas analysis procedures on oil-fired appliances. Shut down the burner and allow the system to cool to a safe handling temperature before accessing flue passages or sampling ports. No mechanical installation is required. Follow applicable local and national combustion equipment service codes when performing burner tune-up and emissions testing.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: True Spot smoke test sets\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: MSA SAFETY\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 0021-0018\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MSA SAFETY","offers":[{"title":"Default Title","offer_id":51383719264562,"sku":"0021-0018","price":59.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/312670971.jpg?v=1782605438","url":"https:\/\/voomisupply.com\/products\/msa-safety-0021-0018-true-spot-smoke-scale","provider":"Voomi Supply","version":"1.0","type":"link"}