Here is a nice report from Stanford Medicine. Dont know if posted before. Has ratings on materials to use for constructing masks. And also rates procedures for disinfecting masks for reuse. Was done to assist medical staff with shortages.
Good info.!
That makes me feel a lot better about weekly supply runs...
I still think that if America really wants to get back to work, until a vaccine is available, we need to crank out N95 masks in a very big way (a billion a month?), and more effectively solve some off the problems with them in summer temperatures and (in much of the US) humidity.
I read a blog awhile ago about a guy that wore his N95 riding a bike, 2 to 3 hours a day in a fairly polluted city. After a week of riding he got the mask tested at a 3M facility. It still had 98% of it’s original capability.
One doctor said he was using the same two face masks until the rubber bands stretched too much. I bought a pack of rubber bands at Staples to replace mine if need be.
I have to tie a little knot in the band that goes behind my pencil-neck to make it tight enough in the first place!