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See Chinese contents: YY/T 1497-2016 YY/T 1497-2016: Evaluation test method for the viral filtration efficiency(VFE)of medical protective face mask materials--Test method using Phi-X174 bacteriophage
This Standard stipulates the method of using Phi-X174 bacteriophage suspension liquid as a surrogate microbe to test the viral filtration efficiency (VFE) of medical protective face masks or face mask materials. This Standard is applicable to medical protective face masks or face mask materials which have requirements for the evaluation of the viral filtration efficiency (VFE).
