MIRA Safety ParticleMax P3 Virus Filter - 6 Pack | MIR-PARTICLEMAX Combining cutting-edge ultra-low particulate air (ULPA) filtration with 40 mm standard NATO threading, these P3-certified biofilters work with your existing NBC/CBRN gas mask to provide unparalleled, long-lasting protection from airborne viral and bacterial threats. These filters are vastly superior to common half-face masks in practically every scenario.Please Note: This bundle comes with 6 filters in total. Features 40 mm x 1/7” NATO filter standard (EN 148-1:1999) threading P3-certified protection (according to EN 143:2000 standards) filters out 99.9999+% of biothreats (not suitable for other CBRN threats) Lightweight (100g) construction Utilizes some of the highest quality ULPA filter construction that works on particles as small as 0.2 microns Prevents aerosol and airborne transmission of viral and bacterial threats 20-year shelf life for easy long-term storage Hydrophobic filter paper is ideal for decontamination showers Certifications & Details P3 R according to EN 143 Standard TH3 P R SL according to EN 12941 TM3 P R SL according to EN 12942 110 x 55 mm size Suitable for use with powered air purifying respirators (PAPR) Compatible with half-masks and full-face respirators Compatible with STANAG 4155, EN148-1, GOST threading P3 filtration removes 99.9999+% of airborne biothreats as small as 0.2 microns Hydrophobic internal construction suitable for chemical showers Incinerable for safe disposal after use Less than .05% penetration at up to 95 l/min. airflow Proven in aerosol concentrations of up to 20 ± 5 mg/m3 Storage Our P3 filters can be stored the same way you’d store other gas mask filters: in a cool, dry place away from exposure to hazardous substances. The filters should be stored in their original packaging at temperatures from −58 to 122°F (−50 to +50°С) protected from the effects of precipitation and groundwater. Maximum humidity during storage of the filters is 98%. Storage in places other than those specified can affect shelf life. Shelf life expiration is specified on each filter. The shelf life of each filter is 20 years.