I have experience with wearing 3M masks and I found them comfortable enough for 2 hours at a time, 8 hours per day. My experience is entirely with activated carbon filters, and the inherently higher resistance of the P100 or even P95 particulate with oil filters might impact comfort significantly.
I have experience with wearing 3M masks and I found them comfortable enough for 2 hours at a time, 8 hours per day. My experience is entirely with activated carbon filters, and the inherently higher resistance of the P100 or even P95 particulate with oil filters might impact comfort significantly.
I don’t have experience with US P99/100 filters but modern European P3 filters which are between P99 and P100 have hardly noticeable resistance.