YY/T 0866-2011 Translated English of Chinese Standard. (YYT 0866-2011, YY/T0866-2011, YYT0866-2011): Total Inward Leakage Determination Method of Protective Face Mask for Medical Usehttps://www.chinesestandard.net, 31 mar 2020 - 12 pagine This Standard stipulates the determination method for total inward leakage of protective face mask for medical use. This Standard is applicable to the evaluation of total inward leakage of half-facepiece protective face mask for medical use (hereinafter referred to as face mask). The evaluation of the leakage performance of other protective face masks may take this Standard as a reference. |
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adjusted aerosol concentration Air compressor Ask the subjects average mass concentration becomes stable Beijing breathing area breathing cycle chin point China Food clean air closed chamber closed test chamber collect sample concentration of aerosol concentration of NaCl conduct the test constant flow continue to walk Determination Method diameter Dimensions document Drug Administration dry environment effective working space exhalation valve Face Width Flame photometer flow rate Food and Drug GB/T Half Facepiece independent sampling system inhaled air inside the mask Keep your head km/h L/min Leakage Determination manufacturer’s instructions mask for medical Medical Device Morphological Length NaCl aerosol NaCl concentration nose root place for 24 pressure change pressure sensor protective face mask pump received pre-treatment root to chin sampling probe Sampling selector simulate the inspection specified date Standard subject wears subject’s head Terms and Definitions terms of references test airflow Test reagent total inward leakage treadmill tube wear the mask wearing instructions