SkyHigh wrote:
MP,
So you're saying that any 3M disposible masks are pretty much useless for some since it's not custom fit for some people?
David
What I said is what I said! I made no comment on the 3m paper dust masks!
I will now say 3m disposable dust masks are cheap way to get minor protection for short term exposure, but if you work day in and day out in an environment that has fine particulate like saw dust they are not enough to protect your lungs in prolonged exposure.
At this time I will say if you invest in a quality respirator that does not personally seal properly, then it is doing no more good than the 3m paper masks. The seal is critical to the efficiency of the respirator.
I am not putting paper dust masks down at all. They serve their purpose but if you read the packaging they tell you they are not intended for prolonged exposure. They have a relative high micron fabric so they only stop the relatively large particulates and stop almost no toxic vapors.