COMPARISON CHART


FILTER MODEL / PARAMETER	NBC-77-SOF	DotPro 330	P-CAN®	NBC-17-SOF COMPACT	VK-530	NBC-37-SOF	VK-700	P-CAN® COMPACT	PARTICLEMAX® P3
Summary	Experience unparalleled protection with our advanced flagship filter, designed to shield against CBRN threats, toxic industrial chemicals, and radioactive methyliodide gas. Your trusted ally in safety.	The DOT PRO 330 Special Combined Filter is a high-performance, EN 14387-certified gas mask filter offering comprehensive protection against a wide range of CBRN threats, including unique mercury vapor filtration, with a 5-year shelf life and durability in extreme conditions.	Our P-CAN® filter is optimized for removing riot control agents and boasts a higher absorption capacity compared to the P-CAN Compact.	Our lightweight variant of the NBC-77 SOF provides similar protection against various threats, albeit at slightly lower concentrations. The primary benefit lies in its significantly reduced weight, ensuring improved mobility without compromising safety.	Safeguard yourself against toxic industrial chemicals while effortlessly converting CO into CO2 for easy exhalation. Please note, this filter is not designed for comprehensive CBRN protection.		Unlike the VK-530 filter, which is primarily designed for protection against smoke and carbon monoxide, our Special Combined Filter Cartridge offers a much broader range of protection with double the life span. It effectively filters out organic solvents, acid gasses, ammonia, mercury vapors, hydroxides, phosphoric acid and its organic derivatives, and chloroacetic acid, making it super versatile.	Our compact version of the P-CAN is tailored to efficiently filter out riot control gases while offering significant weight and size savings compared to its counterparts.	Our ParticleMax P3 filter ensures optimal coverage, effectively eliminating 99.995%+ of particulates, such as bacteria, viruses, and mold. Benefit from superior filtration capabilities while enjoying the advantages of its larger size and weight savings.
External Approvals	EN 14387:2004+A1:2008, DIN 58621:2011	EN 14387:2004+A1:2008	EN 14387+A1	EN 14387 +A2	EN 14387:2004+A1:2008, DIN 58620:2007, EN 143:2000+A1:2006	EN 14387:2004+A1:2008, DIN 58621:2011	EN 14387:2004+A1:2008, DIN 58620:2007, EN 14387:2001	EN 14387+A1	EN 143:2000, EN 12941:1998, EN 12942:1999
Country of Origin	Czech Republic	Czech Republic	Czech Republic	Czech Republic	Italy	Czech Republic	Czech Republic	Czech Republic	Czech Republic
Rating	A2B2E2K2HgSX P3 D R REACTOR	A2B2E2K2HgP3	A2SXP3 D R (OC, CR, CS)	A2B1E1K1 P3 D R	A2B2E2K2HgNO20COP3R	A2B2E1SX P3 D R REACTOR	A2B2E2K2HgNOCO20P3	A1SXP3 D R (OC, CR, CS)	P3 R D
Filter Thread Type	40 mm	40 mm	40 mm	40 mm	40 mm	40 mm	40 mm	40 mm	40 mm
Breathing Resistance (typical)	<140 Pa at 30 L/min	<190 Pa at 30 L/min	<160 Pa at 30 L/min	<200 Pa at 30 L/min	<220 Pa at 30L/min	<130 Pa at 30 L/min	<190 Pa at 30 L/min	<200 Pa at 30 L/min	~60 Pa at 30 L/min
Diameter	110 mm	110 mm	110 mm	90 mm	106 mm	111 mm	110 mm	90 mm	110 mm
Height	85 mm	85 mm	75 mm	85 mm	111 mm	75 mm	95 mm	85 mm	55 mm
Average weight	335 g	360 g	290 g	205 g	500 g	265 g	450 g	205 g	100g
Shelf-life in storage	20 years	5	10 years	10 years	5 years	20 years	10	10 years	20 years
Provides protection from:
Particles	✅		✅	✅	✅		✅	✅	✅
Organic gases & vapours (> 65°C)	✅		✅	✅	✅		✅	✅	❌
Inorganic gases & vapours (not CO)	✅		❌	✅	✅		✅	❌	❌
Acid gases	✅		❌	✅	✅		✅	❌	❌
Ammonia and organic derivatives	✅		❌	✅	✅		✅	❌	❌
Nitrogen oxides	❌		❌	❌	✅		✅	❌	❌
Carbon monoxide	❌		❌	❌	✅		✅	❌	❌
Mercury vapours	✅		❌	❌	✅		✅	❌	❌
Radioactive iodine	✅		❌	❌	❌		❌	❌	❌
Price	$79.99	$49.95	$37.95	$49.95	$89.99	$79.99	$99.97	$37.95	$160.00
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NBC-37 SOF CBRN Gas Mask Filter (40mm NATO)

Name: NBC-37 SOF CBRN Gas Mask Filter (40mm NATO)
Brand: MIRA Safety Wholesale
SKU: FLT_NBC37
Price: 79.99 USD
Availability: InStock

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NBC-37 SOF CBRN Gas Mask Filter (40mm NATO)

Full-spectrum CBRN protection against chemical, biological, radiological, and nuclear threats
20-year shelf life for long-term emergency preparedness and storage
Universal 40mm NATO compatibility with MIRA Safety masks
Certified against CBRN threats plus Reactor P3 radioactive particulates

Quantity

$79.99

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About this product

NBC-37 SOF CBRN Gas Mask Filter (40mm NATO)

The NBC-37 SOF® is built for professionals, emergency preparedness, and long-term storage. Designed around the universal 40mm NATO standard, it delivers dependable protection against chemical, biological, radiological, and nuclear threats while offering exceptional durability and one of the longest shelf lives available today.

Whether you're building a preparedness kit, equipping a response team, or replacing an aging filter, the NBC-37 SOF® offers reliable performance backed by European certification and tested CBRN protection.

Why Choose the NBC-37 SOF?

Not every emergency requires the most specialized filter available. The NBC-37 SOF® was engineered to provide comprehensive CBRN protection while remaining lightweight, durable, and easy to store for decades.

Key advantages include:

20-Year Factory-Sealed Shelf Life – Store it once with confidence and reduce replacement costs over time.
Universal 40mm NATO Compatibility – Fits most modern NATO-standard gas masks and PAPRs using Rd 40 × 1/7" threading.
Impact-Resistant Housing – Rugged polymer construction helps protect the filtration media during transport and operational use.
Professional CBRN Protection – Certified against a broad range of chemical warfare agents, toxic industrial chemicals, radioactive particles, biological threats, and hazardous particulates.
Compact & Lightweight Design – Weighing only 265 grams, the NBC-37 reduces user fatigue during extended wear.

Comprehensive Protection Profile

The NBC-37 SOF is classified as A2B2E1SXP3 DR REACTOR. It provides elite-level defense against:

✓ Organic Gases & Vapors (A2): Protects against substances such as cyclohexane.

✓ Inorganic Gases & Vapors (B2): High-capacity defense against chlorine, hydrogen sulfide, and hydrogen cyanide.

✓ Acid Gases (E1): Effective against sulfur dioxide and other acid vapors.

✓ CBRN Agents: Tested and proven against Sarin (GB), Soman (GD), Mustard Gas (HD), Phosgene (CG), and Cyanogen Chloride (CK).

✓ Nuclear threats: Certified for protection against radioactive methyliodide (REACTOR P3).

✓ Biological & Particles (P3): Achieves a particle filter efficiency of >99.99% against solid and liquid particles, bacteria, and viruses.

✓ Tactical Threats: Blocks riot control agents (Lachrymators), including CS, CR, CN, and pepper spray (OC).

Key Technical Specifications

Feature	Detail
Standard Connection	Rd 40x1/7" Thread (EN 148-1 / STANAG 4155)
Housing Material	Impact-resistant hard plastic
Weight	265 ± 3%grams
Dimensions	111 mm (Diameter) x 75 mm (Height)
Storage Life	20 years (factory sealed)

Exclusive Safety Features

✓ System Compatibility: Can be used in connection with a suitable service respirator or Powered Air Purifying Respirator (PAPR).

Storage & Maintenance

To ensure the full 20-year shelf life, store the filters unopened in their original plastic bags. Ideal storage conditions are in a clean place at temperatures between -5°C and +30°C with relative humidity below 80%. Never attempt to clean the filters with compressed air or water, as they cannot be regenerated.