Aijiren cia vials muaj cov khoom siv frealability zoo heev, thiab yog cov cuab yeej zoo tagnrho rau kev kuaj thiab ntau yam piv txwv cia. Tsis tas li ntawd, chemically inert hau yog qhov zoo rau feem ntau cov chromatography thiab cov ntawv thov cia. Siv PTFE lossis Silicone sterma los xyuas kom meej thiab ruaj khov zoo ntawm cov qauv piv txwv.