IMPORTANT NOTE for CHLORINE: Tested on type B gas such as Chlorine at 5000 ppm, the gas released during the BioLab fire in Georgia. NBC-77 SOF filter exceeds the EN 14387:2021 standard, providing over 35 minutes of protection, surpassing the required 20 minutes. Rated Type B2 for advanced protection against chlorine and other hazardous gases, making it an ideal choice for incidents like the Conyers chemical fire. The NBC-77 SOF 40mm gas mask 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. New Color Options We're excited to introduce two new color options for the NBC-77 SOF 40mm gas mask filter canister: Ranger Green: A versatile, muted green shade perfect for woodland and mixed terrain environments. This color option provides excellent camouflage capabilities for military and tactical applications. Sandstone: A neutral, earth-toned color ideal for desert and arid environments. This option offers effective concealment in sandy or rocky terrains. These new colors join our existing lineup, providing even more versatility for various operational needs. Whether you're operating in dense forests, arid deserts, or urban environments, there's now an NBC-77 SOF filter color to match your requirements. NBC-77 SOF GAS MASK FILTER KEY 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 Technical Data Breathing Resistance in Pa Breathing Resistance in Pa Diameter 110 mm @ flow rate 30l/min. EN 1) NBC-77 SOF 260 <140 @ flow rate 95l/min. EN 1) NBC-77 SOF 980 <600 Height 85 mm Weight 335 g ±5% Storage time 20 years (factory sealed) Type and Class Particle filter efficiency @ flow rate 95l/m Particle filter efficiency @ flow rate 95l/m A2 - organic gases and vapors SX - CG, CK, PS Sodium Chloride NaCl (S) Paraffin oil (L) EN 99.95 99.95 NBC-77 SOF >99.999 >99.999 B2 - inorganic gases and vapors P3 - particles E2 - acid gases and vapors D- dust K2 - ammonia and amines R- reusable Hg - mercury vapors REACTOR - radioactive iodine Note:1) Standard EN 14387+A12) The filter was tested on dolomite dust clogging3) Radioactive iodine and its organic compound - methyliodide¹³¹ acc. to standard DIN 58621 NBC-77 SOF GAS MASK FILTER APPLICATION: The filter canister in connection with a suitable respirator or PAPR provides protection against solid and liquid particles, pepper spray (OC), smoke-producing substances, radioactive particles, bacteria and rickettsia, fungi, toxins, viruses, riot control agents (lachrymators, sternutators, vomiting agents), blister agents (vesicants), choking agents, blood agents, nerve agents, incapacitants, herbicides, pesticides, and TIC, such as bromoacetone, CS, CR, CN, CNC, CNS, CA substances, organic compounds of arsenic - diphenyldichlorarsine - CLARK I (DA), diphenylcyanoarsine - CLARK II (DC), adamsite (DM), diphenyldichlorarsine (DA), ethyldichlorarsine (ED), methyldichlorarsine (MD), mustard gas (H), sulphur mustard gas (HD), T-mustard gas, Q-mustard gas, nitrogen mustard gases (HN1, HN2, HN3), lewisite (L), mixed mustard gas (H-L), phosgene oxime (CX), phosgene (CG), diphosgene(DP), chloropicrin (PS), hydrogen cyanide (AC), cyanogen chloride (CK), arsine (SA), G-agents: sarin (GB), cyclosarin (GF), soman (GD), tabun (GA), IVA (GV), V-agents: VX, VR, VE, VG (amiton), VM and toxic industrial chemicals such as: fumes of organic or inorganic acids, hydroxides, organic solvents with a boiling point above 65° C, ammonia, amines, inorganic and acid gases, agricultural chemical combustion gases, other toxic substances, e.g. benzene, toluene, vinyl chloride, fluorine, hydrogen fluoride, sulphur oxides, chloroacetic acid, aldehydes, mixtures of inorganic acids, and organic substances, mercury vapors, radioactive iodine, organic compounds of iodine (Iodomethane, 129, 131), radioactive particles, etc. Testing Gas Concentration of Testing Gas Breakthrough Time in Minutes EN NBC-77 SOF DAC in Grams NBC-77 SOF ppm mg/I A2 Cyclohexane C₆H₁₂ 5000 17.5 35 39 20.475 B2 Chlorine Cl₂ 5000 15 20 45 20.250 Hydrogen Sulphide H₂S 5000 7.1 40 >80 >17.400 Hydrogen Cyanide HCN 5000 5.6 25 50 8.400 E2 Sulphur Dioxide SO₂ 5000 13.3 20 25 9.975 K2 Ammonia NH₃ 5000 3.5 40 50 5.250 Hg Mercury Hg ----- 13 mg/m³ 100 hours >170 hours >3.900 SX Cyanogen chloride CICN 2500 6.28 20 25 4.710 Chloropicrin CCI₃NO₃ 5000 33.55 20 44 44.286 Phosgene COCl₃ 5000 20.24 20 >77 >47.058 REACTOR Methyloidide₁₃₁ CH₃I - - 2 hours >2 hours - GAS MASK FILTER LIFETIME: Breakthrough time of a gas mask 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. GAS MASK FILTER STORAGE AND MAINTENANCE: Each NBC-77 SOF gas mask filter is sealed in a plastic bag by the manufacturer. Store the filters unopened in a clean place at even temperature, most appropriate at -5 to +30°C and relative humidity below 80%. Sealed filters tolerate also conditions of -30 to +50°C and RH below 95%. The storage period (month and year) for filters is marked on the filter label. Do not try to regenerate the filters. Never clean the filters with compressed air or compressed water. GAS MASK FILTER DISPOSAL: After use, gas mask filters are considered special refuse. Make sure that they are disposed of according to the filtered substance (gases or particles) in accordance with current waste treatment regulations. If the product is to be disposed of, it should be dismantled from the respirator and disposed of as solid waste. Please see local authority regulations for disposal advice and locations.   CLICK HERE FOR THE PDF BROCHURE