Author: Johanna H. Meijer; Timo J.C. Oude Vrielink
Title: FFP-2 respirator masks in times of crisis Document date: 2020_4_15
ID: jwpxnodh_11
Snippet: The sterile packaging material showed high filtration efficiency on the measured particle sizes. The best filtration values have been found for triple layers of unsterilized material. The 0.3 µm is generally seen as the most penetrating aerosol size [2] , which also corresponds to the particle filtration efficiencies found in this study. The triple material layers achieved a 93.84% average efficiency for this particle size, which is very close t.....
Document: The sterile packaging material showed high filtration efficiency on the measured particle sizes. The best filtration values have been found for triple layers of unsterilized material. The 0.3 µm is generally seen as the most penetrating aerosol size [2] , which also corresponds to the particle filtration efficiencies found in this study. The triple material layers achieved a 93.84% average efficiency for this particle size, which is very close to the requirements of efficiency required for N95 and FFP2 respirator masks (95% [3] and 94% [4] , respectively). The test for splash resistance was included to demonstrate the water resistance of the material, which is not a requirement for respirator masks, but contributes to protection against coughing and sneezing.
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