{"product_id":"msa-655533-papr-ammonia-pre-filter","title":"Msa 655533 Papr Ammonia Pre-filter","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe MSA 655533 is an ammonia pre-filter designed for use with Powered Air-Purifying Respirator (PAPR) systems. Pre-filters extend the service life of primary cartridges by capturing particulates and contaminants before they reach the main filter media. This filter provides targeted protection against ammonia exposure in industrial and occupational environments. Licensed safety professionals and industrial hygienists specify pre-filters like the 655533 as a component of a complete respiratory protection program. The unit ships individually and is designed for straightforward field replacement without special tooling.\u003c\/p\u003e\u003cp\u003eThe MSA 655533 is suited for environments where ammonia vapors are present, including agricultural facilities, refrigeration plants, wastewater treatment operations, and chemical processing settings. It is used in conjunction with a compatible MSA PAPR assembly as part of a layered respiratory protection strategy. This pre-filter is appropriate for maintenance technicians, safety officers, and industrial workers operating in regulated work zones where ammonia concentrations require engineered respiratory controls.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAmmonia protection type for targeted vapor and gas defense\u003c\/li\u003e\n\u003cli\u003ePre-filter classification extends primary cartridge service life\u003c\/li\u003e\n\u003cli\u003eCompatible with MSA PAPR systems requiring this filter format\u003c\/li\u003e\n\u003cli\u003eLightweight construction at 0.01 pounds for minimal added respirator burden\u003c\/li\u003e\n\u003cli\u003eIndividual unit packaging supports single-use or per-worker replacement protocols\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style pre-filter replacement for MSA Powered Air-Purifying Respirator systems requiring ammonia-rated filtration. Verify compatibility with the specific PAPR assembly model before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified safety professional or trained user following the respirator manufacturer's written procedures and applicable OSHA respiratory protection standards (29 CFR 1910.134). Ensure the PAPR unit is powered off before removing or installing filter cartridges. Inspect the filter seating and housing gaskets for damage prior to use. Do not modify the filter housing or attempt to use this pre-filter outside of its rated protection type or approved PAPR assembly.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection Type\u003c\/strong\u003e: Ammonia\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Type\u003c\/strong\u003e: Pre-Filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 46182007\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: MSA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 655533\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MSA SAFETY","offers":[{"title":"Default Title","offer_id":51720613626162,"sku":"655533","price":75.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/29162960621ad188fa71458cd1af8254.jpg?v=1788566940","url":"https:\/\/voomisupply.com\/products\/msa-655533-papr-ammonia-pre-filter","provider":"Voomi Supply","version":"1.0","type":"link"}