N95 dust masks are great for use at home or on the job, doing a wide variety of projects including carpentry, cleaning and sweeping, landscaping (mowing, bagging, blowing), chainsawing, grinding and many others. It is important to understand how to select the correct type of mask for your needs and to know how to properly put the mask on. It is very common for people to select the wrong type of mask or to put the mask on without achieving the proper seal. This can increase exposure or even render the mask useless. These masks are NOT certified for medical or surgical use, and all type N masks (N95, N99, N100) are not certified to offer protection against oil-based particulates. According to the National Institure for Occupational Safety & Health (NIOSH), the "N" refers to "Not resistant to oil". These masks are type 84A respirators with particulate filters. Respirator filters work by slowing down air flow so that smaller particles are trapped in the fibers of the filter. This means slower breathing is most effective, and filtering efficiency decreases with faster breathing. As a NIOSH-certified respirator, the Amston N95 mask, should form a tight but comfortable seal on your face, and it will not impair normal, relaxed breathing. NIOSH-certified respirator masks are classified as N (not resistant to oil), R (somewhat resistant to oil), and P (oil-proof). The numbers refer to the percentages of airborne particles the mask will filter out under proper use. 95 means at least 95%, 99 means at least 99%, and 100 means at least 99.97%.
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