Ace All-PTFE Filter Reactor Assembly, model 1640061 is manufactured by Ace Glass. This product can be used in fluorine chemical reaction and strong alkali compound which can corrode glass. The pump head, pump head joint, valve body, stirrer bearing, bottom filter assembly with valve and stirrer shaft are all PTFE materials. The filter holder is polypropylene. Contains an internal coil of Halar® Coated stainless steel (1 L size) for heating or cooling the contents.