PTFE (polytetrafluoroethylene) silicon vials, tseem hu ua PTFE-lined silicon vials, yog cov ntim tshwj xeeb siv hauv cov chaw kuaj tshuaj. Cov vials no yog tsim los muab cov tshuaj lom neeg ua tsis zoo thiab kev thauj khoom siv tshuaj thiab thauj cov tshuaj uas muaj kev sib cuam tshuam nrog cov khoom siv ntim khoom.
