Medical polymers now must face rigorous sterilization treatments in service, especially elastomers used for closures like plungers (also called "pistons" and "stoppers") for prefillable syringe systems, reports Tibor Hlobik of PFS Technologies (West Pharmaceutical Services, Inc.). "The ideal sterilization process destroys all microorganisms rapidly with minimal adverse impact on the chemical and physical properties of the elastomeric closure," he explains.
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