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.

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+A1
2) The filter was tested on dolomite dust clogging
3) 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
TESTING GAS			PPM	MG/I	BREAKTHROUGH TIME IN MINUTES EN	NBC-77 SOF	DAC IN GRAMS NBC-77 SOF
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.

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