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. 2020 Oct 12:1–10. doi: 10.1017/ice.2020.1257

Table 2.

The Results of the Hydrogen Peroxide Off-Gassing From the N95 FFR After an Optimal Disinfection Cycle

Time After Cycle Instantaneous 15-Min STEL
0 2.4 ppm 1.76
20 min 1.4 ppm 1.15
40 min 0.2 ppm 0.18 ppm
60 min 0.0 ppm 0.0 ppm
80 min 0.0 ppm 0.0 ppm

Note. FFR, filstering face-piece respirator; STEL, short-term exposure limit.