This is probably a military mask or a design derived from one. The trick with these is finding filter cartridges suitable for industrial chemicals at
a reasonable price. The warfare filters aren't suitable for most of the stuff we'd want the mask for in a chemistry lab.
The newer masks have moved away from the 40mm NATO threads and use filter elements that are all kinds of unusual sizes (like the one pictured above).
I have no idea where or even if you could get the proper filters.
EDIT: I see it does use a 40mm filter. I would be interested in one of these for sure.
[Edited on 3-10-2018 by Mr. Rogers] |