The “N” stands for “Not resistant…to..and the evaluation requirements for N95 masks Research Study The “N” stands for “Not resistant…to..and the evaluation requirements for N95 masks Recent Advance April 7, 2020 0 N95 is one of the filter standards (42CFR84) for respirator type masks prescribed by the US National... Read More Read more about The “N” stands for “Not resistant…to..and the evaluation requirements for N95 masks