Two filters would lower the breathing resistance, at the expense of added weight. What is the benefit of using two filters at the same time? Once the filter is used in a contaminated environment, it is considered toxic waste. Keep in mind if you are in a contaminated environment, you would need to decontaminate properly before removing your protective gear, and then dispose of the filter as there is no way to regenerate it. How long will a NBC-77 SOF filter protect in non-contaminated air against viruses?Īs viruses travel in particles and liquid aerosols, this filter will protect you for as long as you can wear the mask (several days). So to answer your question, yes, you would have to change the filter each time if it's exposed to a viral agent. A filter cannot be regenerated in any way, and once used, it is considered toxic waste and must be disposed of. This mask, as long as it's used per best practices and forms a tight seal, would protect your breathing passages and eyes from viral threats. If you use it for Coronavirus, which model do you suggest? Do you need to change the filter each time if you go out with possible affected patients around? air flow:ĭo the mask and NBC-77 SOF filters that you can buy in the bundle both have a 20-year shelf life? MATERIAL OF THE FACEPIECE: bromine-butyl rubberīreathing resistance at 30l/min.Carries MIRA Safety’s special 5-year manufacturer warranty.Complies with all standards under EN 168 for impact protection, making this the perfect mask for riot control situations.Meets all requirements under EN 136:1998, Class III.Conforms to European quality and sustainability standards, marked with the CE symbol.Used for industrial, agricultural, law enforcement, professional rescue, specialized welding, construction and painting applications.Compatible with CamelBak water bladders with a Type A or M adapter (not included).
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