GB/T 2891-1995 Translated English of Chinese Standard (GB/T 2891-1995, GBT2891-1995): Performance test methods for facepiece of filfer type respirator

Front Cover, 2023 M02 24 - 21 pages
This Standard specifies the air leakage coefficient for the wearing, actual dead space, field of view, assembly air tightness, exhalation valve air tightness, exhalation valve resistance to air, lens transmittance (transmittance ratio) and facepiece inhalation resistance and other performance test methods for filter type respirators.

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