WAG Charcoal Canister System: Twin Inlet Canister & holder

Twin Valved Inlet Refillable Canister (560 g charcoal) & SS Wire Holder: absorbs Isoflurane vapor from 125 ml liquid (1/2 of 250 ml bottle). Change charcoal with each new bottle of Iso (1/2 is in animal). Replacement charcoal sold separately.