MIRA Safety NBC77SOF CBRN Gas Mask Filter | MIR-NBC77SOF The NBC-77 SOF filter canister, in combination with a full-face mask, mouthpiece assembly, or PAPR, reliably protects air passages against a wide range of harmful and highly toxic substances including all known CBRN agents.The filters are produced with standard round threads according to STANAG 4155 (EN 148- 1)- Rd 40x1/7". The filter components are made of hard plastic. This results in a very robust product that is extremely durable against shock and impact damage in operational use. Features Compatible with standard 40mm NATO threaded respirators, which are widely available. 20-year shelf life - save money long-term by not having to replace your filters every 5 years Used by military personnel, CBRN specialists, and special operations forces all over the world Filter all known CBRN agents, including radioactive iodine, rated for A2B2E2K2HgSXP3 D R. Certified by European agencies and has the “CE” symbol. Compliant under EN 14387:2004 + A1:2008 Lifetime Breakthrough time of a filter is tested according to EN 14387+A1 at humidity 70% and flow rate 30 l/min, which is equivalent to the volume of air per minute used by an average person carrying out medium heavy work. The approximate lifetime (usage time) of a filter may, under normal conditions, calculated by comparing the concentration at the workplace and the minimum Dynamic Adsorption Capacity (DAC) for the filter.
