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kn95 pm2 5 valve non woven for benito juare

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    In terms of PM 2.5, the ambient concentration average range variation in which face masks were tested was from 5 to 25 g·m 3, and the mask with the highest effectiveness in terms of PM 2.5 was the MASK 7 with a value of 89%, while the lowest value was found for MASK 3 equal to 35% (merging the data for the three types of breathing). In

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    Aug 05, 2018 · We obtained maximum removal efficiency of PM10 (52%), PM2.5 (46%), and PM1 (38%) at a 60 Hz fan frequency using double magnetic filters. We also found that the stability of the PM removal efficiency by the double filter (RSD, 3.2 5.8%) was higher than that by a single filter (10.9 24.5%) at all fan operating conditions.

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