4 ms·
The 3M 8210 N95 respirator which I referenced above doesn’t have a valve.
by RegnisGnaw 7y ago
The 3M 8210 N95 respirator which I referenced above doesn’t have a valve.
- no-s 7y agonevertheless 8511 masks disappeared from the market, and Amazon is telling me they are available only to gov't and institutions. On eBay the masks are listed at over $25 apiece. Unfortunately when doing dusty work one mask will only last for a day or less. I started having trouble sourcing these in late January.
- no-s 7y agoit turns out I have everything I need to manufacture small qty runs (100s) of effective masks at about $1.60ea. So I'm just going to do it to stock up my household for the duration. QC is my only concern, since I have to use a qualitative test (smell the bacon frying).