Author: Avilash Cramer; Enze Tian; Sherryl H Yu; Mitchell Galanek; Edward Lamere; Ju Li; Rajiv Gupta; Michael P Short
Title: Disposable N95 Masks Pass Qualitative Fit-Test But Have Decreased Filtration Efficiency after Cobalt-60 Gamma Irradiation Document date: 2020_3_30
ID: kl9huu33_19
Snippet: While disposable N95 masks remain functional as per an qualitative fit test after receiving both 10 kGy and 50 kGy doses of gamma radiation, the fact that their measured particular filtering efficiency declined so severely suggests against using ionizing radiation as a method of mask sterilization. The small particle filtration properties of a mask are provided by primarily electrostatic, rather than mechanical processes, so it is likely that the.....
Document: While disposable N95 masks remain functional as per an qualitative fit test after receiving both 10 kGy and 50 kGy doses of gamma radiation, the fact that their measured particular filtering efficiency declined so severely suggests against using ionizing radiation as a method of mask sterilization. The small particle filtration properties of a mask are provided by primarily electrostatic, rather than mechanical processes, so it is likely that the ionizing radiation is discharging the mask.
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