Clear Polypropylene Canister with Stand accommodates any of the following trap inserts (sold separately): Acid Trap Insert 7814800, Moisture Trap Insert 7814900, Radioisotope Trap Insert 7815000, Solvent Trap Insert 7815200, and Ammonia Trap Insert 7995600. Canister has inlet and outlet 3/4" NPT - 1/2" tube fittings.