NIOSH approves respirators in accordance with 42 Code of Federal Regulations Part 84 (42 CFR 84) and provides guidance for their use in occupational settings. This mask holds an EN 136 CL 2 certification. Engineering control systems, such as adequate ventilation or scrubbing of contaminants, are the preferred control methods for reducing worker exposures. There are plenty of good masks out there that are still high quality, but more affordable thanks to the lack of NIOSH certification. However, It does have a NIOSH rating for use against many gases, chemical agents, and particulates. It’s also important to note that NIOSH certification can add a substantial amount of cost to a gas mask. 3M recommends replacing both pancake and cartridge filters within six months of opening their packages (PDF), or, in environments where oil aerosols are present, after only 40 hours of total use or 30 days after the first use, whichever comes first. NIOSH is one of the stricter and more comprehensive standards for gas mask approval. The cartridges are more expensive and weigh far more-8.6 ounces per pair on our scale-but they’re also sturdier, and they might be the better choice if you’ll be doing strenuous physical work, such as a kitchen demolition, while wearing your respirator. The pancake filters weigh just half an ounce per pair, and they’re our first recommendation for typical use outdoors and around the home. The M40 series utilizes the common 40mm standard NATO threaded filters commonly. militarys long outdated and terribly designed M17 series mask. The M40 series of mask was designed as a replacement for the U.S. These M40A1 gas masks are inspected and all parts are included. NIOSH approval means that, at the equivalent rating (P100 in this case), pancake-style filters, such as the 3M 2097 filter we recommend, protect you just as effectively as hard-plastic cartridge filters like the 3M 60926. Military surplus M40A1 Gas Masks in very good to excellent condition. And as P-designated filters, they also protect against oil-based substances in the air, such as paint fumes, as well as some caustic vapors. To choose a brand new gas mask you need to see that they are manufactured according to NIOSH ( National Institute for Occupational Safety and Health) guidelines for respirators and other. A canister on a tight fitting full facepiece or PAPR can be used for escape from unknown concentrations of gas or vapor hazards whereas a cartridge based system cannot be used in this capacity. The “100” designation indicates that they capture 99.97% of fine particulates, such as wildfire smoke. P100-rated filters are the most widely available kind that meet that criterion.
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