20mm ETFE Bromobutyl Serum Vial Stoppers Laboratory Pharma Closures
1000 count – 20mm ETFE Laminated Bromo butyl Rubber Stoppers – Pharmaceutical Grade Serum Vial Closures. TheETFE (ethylene tetrafluoroethylene) barrier film provides superior protection against chemical interaction, helping maintain the integrity of sensitive samples and formulations.