PTFE Teflon Reagent Bottle With Screw Cap For Laboratory Use, 100ml High Quality PTFE Bottles @ US $ 18 / Piece PTFE Reagent Bottle (or PTFE Chemical Bottles, Teflon Reagent Bottle) is a substitute to glass reagent bottle, PTFE Reagent Bottle is chemical resistant to both acid matters and alkaline matters, unbreakable, easy to clean, light weight and microwavable, with leak-proof screw cap.