On Friday, July 6, 2018 at 11:11:59 PM UTC-5, Dr. Deb wrote:
The most important criteria for selecting a filtered face mask is to select
one that fits your purpose. For non poisonous dusts, I use a paper, dispos
able N-95 rated mask from a reputable maker like, Norton, 3M, etc.
When I spray latex or oil, I use a rubber mask with replaceable filters. T
his is the newest iteration of the ones I use:
Note that the difference is the filtering. The cartridges for this mask ke
ep out almost 100% of all the bad stuff from paints and solvents including
the ammonia and formaldehyde from latex, and all the petroleum solvents in
Cartridges on these masks have a life span on them, so if you buy this mask
, use it mask until it gets a little difficult to breathe then replace the
cartridges. Since the charcoal loses its efficacy after about 90 days, if I
start a new project, I just buy new filters. Much easier than getting new
depends on what for
and how long you wear it
on occasion i wear n99 and face shield and due to faster breaths needed
the shield fogs up more quickly
usually resort to goggle and n99 and still i only do 20 minute intervals
and then clear for a few minutes
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