I bought this as the Covid-19 stuff was kicking off because N95's have me sucking for air and I wanted the same protection but with more available air.
This mask with cartridge and individual filters is supposed to filter down to .3 microns, the same as an N95---so, why not give it a try.
I know you're all wondering why I'd walk down the street with this. I don't. I work in a busy ICU and have been in using this mask for that.
Yes, I am using it off-label. Yes, my employer is aware. Yes, several of my co-workers have purchased also and none of us have contracted it even though we've all been exposed.
So, it seems to be doing the job for a virus. I can't wait until all this mess is over to test it against sawdust!
The only thing I would like improved is about 25 percent more airflow.
Oh, and the batteries get me through about 18 hours of work before the fan starts getting weak.
Good product. Highly recommend. Save those lungs!