Eric Knapp wrote:May I ask what particle counter brand/model you have and where you got it?
I don't know where Bob got his, Eric, but I linked to one at that price on Amazon in my post above...
Eric Knapp wrote:May I ask what particle counter brand/model you have and where you got it?
Barry Daniels wrote:The really fine stuff does not settle for a long time. An air filtration with a two stage filter has a much better chance of removing the sub micron level particles than a box fan with a simple house filter, or even the Filtrete or similar fabric filters.
Eric Knapp wrote:Barry Daniels wrote:The thicker the filter, the better. That 5" should be effective.
HEPA filters are rated to remove 99.97% of particles that have a size down to 0.3 µm. And it's the sub micron stuff that cause the most problems because they get further down into your lungs.
Good point, Barry. That's another reason why I'm doing more with hand tools over time. I'm also using a P100 mask when I do really dusty things and I'll be looking for better ways to have cleaner air as I do more in the shop.
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