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10.1016/j.ssci.2020.104995

http://scihub22266oqcxt.onion/10.1016/j.ssci.2020.104995
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suck abstract from ncbi


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pmid32982065      Saf+Sci 2021 ; 133 (ä): 104995
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  • Face masks and respirators in the fight against the COVID-19 pandemic: An overview of the standards and testing methods #MMPMID32982065
  • Forouzandeh P; O'Dowd K; Pillai SC
  • Saf Sci 2021[Jan]; 133 (ä): 104995 PMID32982065show ga
  • The COVID-19 outbreak has resulted in a shortage of personal protective equipment (PPE) throughout the world. This shortage has resulted in an increase in production of PPE to meet the demand, and as a result, several substandard equipment has entered the market. With face masks and respirators now beginning to see widespread use throughout the world, the standards and test with which they are required to undertake have become points of interest. The filtration efficiency of the masks is a key testing element that examines its ability to filter particles, bacteria and viruses; this examines the penetration efficiency percentage of each with lower results being preferable. Masks are also subjected to NaCl testing method, which allows a range of particle sizes to be examined and their penetration to be observed. The masks must also show considerable resistance to fluids and flames, to prevent the penetration of liquids and to be non-flammable. Various PPE testing protocols such as biological, chemical, fluid and flame resistances, protective ensemble, facepiece fit testing, NIOSH NaCl method and impact protection have been discussed. In addition, various tests involving bacterial and viral filtration efficiencies are also discussed. Differential pressure is examined to ascertain the comfort, airflow and breathability of the masks, whilst fit testing is examined to ensure a correct fit of the mask.
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