Quote Originally Posted by TheFlyingCamera View Post
Look for canisters that are rated for organic solvents. They should be more than sufficient for pyrogallol, pyrocatechin, and various forms of dichromate/bichromate.
Yes, the cannisters rated for organic vapors will also filter out very small particulates. When you weigh out materials--especially anything dusty--go slowly and carefully to avoid aerosolizing the material.