COMPARISON CHART


FILTER MODEL / PARAMETER	NBC-77-SOF	VK-530	P-CAN®	PARTICLEMAX P3	VK-700	NBC-17-SOF COMPACT	DotPro 330	P-CAN COMPACT
Summary	Protects against CBRN threats, riot control agents, toxic industrial chemicals, and radioactive methyl iodide.	Protects against toxic chemicals and converts CO to CO2, but not for full CBRN protection.	Removes riot control agents with higher absorption than the P-CAN Compact.	Removes 99.995%+ of particulates, offering superior filtration with larger size and weight savings.	Special Combined Filter Cartridge offers broader protection and double the lifespan compared to the VK-530, filtering multiple harmful substances.	The lightweight NBC-77 SOF offers similar protection at lower concentrations, enhancing mobility without compromising safety.	Offers comprehensive Toxic Industrial Chemicals protection , mercury vapor filtration, and durability with a 5-year shelf life.	The compact P-CAN efficiently filters riot control gases with significant weight and size savings.
External Approvals	EN 14387:2004+A1:2008, DIN 58621:2011	EN 14387:2004+A1:2008, DIN 58620:2007, EN 143:2000+A1:2006	EN 14387+A1	EN 143:2000, EN 12941:1998, EN 12942:1999	EN 14387:2004+A1:2008, DIN 58620:2007, EN 14387:2001	EN 14387 +A2	EN 14387:2004+A1:2008	EN 14387+A1
Country of Origin	Czech Republic	Italy	Czech Republic	Czech Republic	Czech Republic	Czech Republic	Czech Republic	Czech Republic
Rating	A2B2E2K2HgSX P3 D R REACTOR	A2B2E2K2HgNO20COP3R	A2SXP3 D R (OC, CR, CS)	P3 R D	A2B2E2K2HgNOCO20P3	A2B1E1K1 P3 D R	A2B2E2K2HgP3	A1SXP3 D R (OC, CR, CS)
Filter Thread Type	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	<220 Pa at 30L/min	<160 Pa at 30 L/min	~60 Pa at 30 L/min	<190 Pa at 30 L/min	<200 Pa at 30 L/min	<190 Pa at 30 L/min	<200 Pa at 30 L/min
Diameter	110 mm	106 mm	110 mm	110 mm	110 mm	90 mm	110 mm	90 mm
Height	85 mm	111 mm	75 mm	55 mm	95 mm	85 mm	85 mm	85 mm
Average weight	335 g	500 g	290 g	100g	450 g	205 g	360 g	205 g
Shelf-life in storage	20 years	5 years	10 years	20 years	10	10 years	5 years	10 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 – ^$799.99	^$89.99	^$39.95	^$160.00	^$99.97	^$49.95	^$59.96	^$37.95
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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
SKU: FLT_NBC37
Price: 79.99 USD
Availability: InStock
Rating: 5.0 (1 reviews)

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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

^$79.99

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NBC-37 SOF® CBRN Gas Mask Filter

^$79.99

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Description

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.

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

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

Why Choose the NBC-37 SOF?

Comprehensive Protection Profile

Key Technical Specifications

Exclusive Safety Features

Storage & Maintenance

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