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The protection factor of a respirator or class of respirators is the minimum level of protection the wearer can expect. For example, a half mask

Fit testing is a requirement of the AS/NZS standard. There are two types of tests. A quantitative test measures the amount of particulates inside the

Asbestos is a proven human carcinogen, and all forms of asbestos can cause cancer – Ministry of Health. Asbestos was widely used in commercial and

Filters need to be changed regularly to continue to maintain protection levels. Breathing resistance increases as particulate filters fill up. If you’re turning blue, it