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MIRA Safety  |  SKU: MIRA-NBC77SOF-BLK

MIRA Safety - NBC-77 SOF 40mm CBRN Gas Mask Filter

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Description

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.

With a remarkable 20-year shelf life, this filter provides long-term storage solutions and compatibility with commonly available 40mm NATO threaded respirators. Whether you're dealing with organic gases, radioactive iodine, or toxic vapors, this filter meets EN 14387:2021 standards and provides 35+ minutes of Type B2 protection, like in the BioLab fire in Georgia.

Key Features:

  • Compatible with standard 40mm NATO threaded respirators for easy interchangeability
  • 20-year shelf life, reducing the need for frequent replacements
  • Used by military personnel, CBRN specialists, and special operations forces globally
  • Filters all known CBRN agents, including radioactive iodine, with a rating of A2B2E2K2HgSXP3 D R
  • Certified by European agencies and marked with the CE symbol
  • Exceeds EN 14387:2021 standards for protection against chlorine gas (Type B2)

New Color Options:

  • Ranger Green: A muted green for woodland and mixed terrain, ideal for camouflage in military and tactical settings.
  • Sandstone: An earth-toned color, perfect for desert or arid environments, offering concealment in sandy or rocky terrains.

Whether you're operating in dense forests, deserts, or urban environments, there's now a filter color option to suit your operational needs.

Gas Mask Filter Lifetime: The lifetime of the filter depends on the conditions of use and concentration of contaminants. Breakthrough times are tested according to EN 14387+A1, under conditions of 70% humidity and 30L/min flow rate, simulating medium-heavy work.

Gas Mask Filter Storage: Each NBC-77 SOF filter is sealed in plastic by the manufacturer. It should be stored unopened in a clean place at temperatures between -5°C and +30°C, with humidity levels below 80%. Sealed filters can tolerate conditions from -30°C to +50°C.

Disposal: After use, dispose of the filter according to the filtered substances and current waste treatment regulations. Follow local authority guidelines for disposal.

Technical Data:

  • Diameter: 110 mm
  • Height: 85 mm
  • Weight: 335 g ±5%
  • Storage Time: 20 years (factory sealed)
  • Breathing Resistance (at 30L/min): <140 Pa
  • Breathing Resistance (at 95L/min): <600 Pa

Type and Class Particle Filter Efficiency @ Flow Rate 95L/m:

  • A2: Organic gases and vapors
  • B2: Inorganic gases and vapors
  • E2: Acid gases and vapors
  • K2: Ammonia and amines
  • Hg: Mercury vapors
  • SX: CG, CK, PS
  • P3: Particles
  • D: Dust
  • R: Reusable
  • Reactor: Radioactive iodine

Particle Filter Efficiency @ 95L/min:

  • Sodium Chloride NaCl (S) and Paraffin Oil (L): EN 99.95%, NBC-77 SOF >99.999%

NBC-77 SOF Gas Mask Filter Application:

  • Protection against solid and liquid particles
  • Pepper spray (OC)
  • Smoke-producing substances
  • Radioactive particles, bacteria, rickettsia, fungi, toxins, and viruses
  • Riot control agents (lachrymators, sternutators, vomiting agents)
  • Blister agents (vesicants), choking agents, blood agents, nerve agents
  • Incapacitants, herbicides, pesticides
  • Toxic Industrial Chemicals (TIC), such as bromoacetone, CS, CR, CN, CNC, CNS, CA substances, and more
  • Organic compounds of arsenic - CLARK I (DA), CLARK II (DC), mustard gases (H, HD, HN1, HN2, HN3)
  • Phosgene oxime (CX), phosgene (CG), diphosgene (DP), hydrogen cyanide (AC), cyanogen chloride (CK)
  • G-agents: Sarin (GB), Cyclosarin (GF), Soman (GD), Tabun (GA), IVA (GV), V-agents: VX, VR, VE, VG (amiton), VM
  • Fumes of organic or inorganic acids, ammonia, amines, organic solvents, sulfur oxides, mercury vapors

Notes:

  • Tested to standard EN 14387+A1.
  • The filter was tested on dolomite dust clogging.
  • Effective against radioactive iodine and its organic compound (methyl iodide), according to DIN 58621 standards.

Testing Gas and Results:

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 -

 

Return Policy:

For MIRA Safety products, we adhere to the MIRA Safety return policy, prioritizing the safety and wellbeing of our customers above all else. Given the critical nature of the products we offer, and to ensure their integrity, we do not accept returns once items have shipped from our warehouse. This policy safeguards our customers, ensuring the PPE they receive is uncompromised and untampered.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • JCB
  • Mastercard
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Frequently Asked Questions

How does the NBC-77 SOF 40mm filter protect against CBRN threats?

The NBC-77 SOF filter boasts an impressive 20-year shelf life when stored properly. This longevity is achieved by sealing the filter in plastic, which protects it from environmental factors that could degrade its performance. To ensure the filter remains effective, it should be stored unopened in a clean, dry place at temperatures between -5°C and +30°C, with humidity levels below 80%. The sealed filters can also withstand more extreme conditions, ranging from -30°C to +50°C, but these should be avoided for long-term storage.

For a comprehensive guide on emergency preparedness, including storage tips, visit our complete guide to emergency preparedness kits.

What is the shelf life of the NBC-77 SOF filter and how should it be stored?

The NBC-77 SOF filter boasts an impressive 20-year shelf life when stored properly. This longevity is achieved by sealing the filter in plastic, which protects it from environmental factors that could degrade its performance. To ensure the filter remains effective, it should be stored unopened in a clean, dry place at temperatures between -5°C and +30°C, with humidity levels below 80%. The sealed filters can also withstand more extreme conditions, ranging from -30°C to +50°C, but these should be avoided for long-term storage.

For a comprehensive guide on emergency preparedness, including storage tips, visit our complete guide to emergency preparedness kits.

Can the NBC-77 SOF filter be used in conjunction with any gas mask?

The NBC-77 SOF filter is compatible with any respirator that uses a standard 40mm NATO thread, making it highly versatile for various applications. This includes full-face masks, mouthpiece assemblies, and powered air-purifying respirators (PAPRs). However, it's crucial to ensure that the respirator you use is in good condition and properly fitted to maintain an effective seal. Compatibility with different masks allows users to adapt to different environments and threat levels, but always verify the fit and seal before entering a hazardous area.

For more on gas masks and their compatibility, check out our gas masks collection.

What are the color options for the NBC-77 SOF filter and why do they matter?

The NBC-77 SOF filter comes in two color options: Ranger Green and Sandstone. These colors are designed to provide tactical advantages in various environments. Ranger Green is ideal for woodland and mixed terrain, offering camouflage in military and tactical settings. Sandstone, on the other hand, is suited for desert or arid environments, providing concealment in sandy or rocky terrains. The choice of color can be crucial for military personnel or those involved in tactical operations where blending into the environment is necessary for safety and mission success.

For more on tactical gear and its applications, explore our tactical survival gear guide.

How should the NBC-77 SOF filter be disposed of after use?

Disposal of the NBC-77 SOF filter should be conducted in accordance with local waste treatment regulations, particularly concerning the substances it has filtered. This is important to prevent environmental contamination or exposure to residual hazardous materials. Users should follow guidelines provided by local authorities, which may include specific disposal sites or procedures for hazardous waste. Proper disposal not only ensures compliance with legal requirements but also protects the environment and public health.

For more details on handling hazardous materials, refer to our hazmat suits and gear collection.

What are the breathing resistance levels of the NBC-77 SOF filter?

The NBC-77 SOF filter has a breathing resistance of less than 140 Pa at a flow rate of 30L/min and less than 600 Pa at 95L/min. These levels are designed to ensure that users can breathe comfortably even during medium-heavy work. Breathing resistance is a critical factor in filter performance, especially in high-stress situations where ease of breathing can impact endurance and effectiveness. However, users should be aware that resistance may increase as the filter captures more particulates over time.

For a deeper understanding of gas mask performance, explore our guide on chemical filters.

What specific agents does the NBC-77 SOF filter protect against?

The NBC-77 SOF filter provides protection against a wide range of harmful agents, including organic gases, radioactive iodine, toxic vapors, and all known CBRN agents. It is effective against riot control agents, blister agents, choking agents, blood agents, nerve agents, and toxic industrial chemicals such as bromoacetone and cyanogen chloride. This comprehensive protection makes it suitable for use in various emergency scenarios, from industrial accidents to military operations. However, the filter's effectiveness is contingent upon proper use and fit, as well as the concentration of contaminants.

For more insights into CBRN protection, visit our gas mask filters collection.

How does the NBC-77 SOF filter perform in high humidity conditions?

The NBC-77 SOF filter is tested under conditions of 70% humidity and a flow rate of 30L/min, simulating medium-heavy work environments. This ensures that the filter maintains its protective capabilities even in humid conditions, which can be challenging for filtration efficiency. While the filter is robust in such environments, users should be mindful that extreme humidity can still affect the overall comfort and performance of both the filter and the respirator. Regular checks and maintenance of the respirator system are recommended to ensure optimal performance.

For tips on maintaining your equipment in various conditions, see our guide on essential prepping supplies.

What are the testing standards that the NBC-77 SOF filter meets?

The NBC-77 SOF filter meets and exceeds the EN 14387:2021 standards, which are European standards for gas filters and combined filters. These standards ensure that the filter provides adequate protection against a variety of gases and vapors, including chlorine gas. Additionally, the filter has been tested on dolomite dust clogging and is effective against radioactive iodine and its organic compound, methyl iodide, according to DIN 58621 standards. These rigorous testing standards provide confidence in the filter's ability to protect against a wide range of threats.

For more on the importance of standards in safety gear, explore our article on chemical filters.

What scenarios are ideal for using the NBC-77 SOF filter?

The NBC-77 SOF filter is suitable for a broad range of scenarios, including military operations, industrial chemical spills, and emergency response to CBRN threats. Its ability to filter out various toxic substances makes it ideal for environments where exposure to chemical warfare agents or industrial toxins is a risk. The filter's compatibility with standard 40mm NATO threaded respirators also allows for flexibility in different operational settings. While the filter provides robust protection, users should always assess the specific threat environment and ensure that their protective gear is appropriate for the conditions they may face.

For more on preparing for specific emergency scenarios, visit our comprehensive emergency preparedness guide.