What is the difference between a P3 and A2P3 filter? On guide in the OP I see a suggested A2P3 filter but wikipedia talks only of P3 filters.
And here
http://www.rsgsafety.com/products/product/a2p3-filter I read
>A: Organic Gases and Vapors>B: Inorganic Gases and VaporsSo should I buy a "B" filter for paint?