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. Author manuscript; available in PMC: 2020 Apr 1.
Published in final edited form as: J Int Soc Respir Prot. 2019;26(1):18–27.

Table II.

Shape Change of Surgical N95 Respirators Using a Medium Headform at 22°C and 50% RH, and a Breathing Flow Rate of 50 L/min

PPE Model Sample #
1 2 3 4 5
3M 1860 No No No No No
Gerson 1730 No No No No No
Kmberly Clark 46727 No No No Possibly No
Sperian One-Fit HC-NB295F No Possibly No No No
3M 1870/1870+ No No No No No
Alpha ProTech 695 No No Possibly No No

Note: Shape change observed was insignificant, minor and major as represented by “No”, “Possibly” and “Yes”, respectively.