CAPS yeScrew Thread vials inowanikwa negomba rakavhurika rehunhu hwekutadza uye kuwedzerwe nekuwedzera kana neyakagadzirirwa sampula yekuchengetedza. Teflon uye Silicone Rubber kana Ultra-yakachena silicone inoshandiswa seyakagadzirwa zvinhu kuti ive nechokwadi chekuti Septa haina chepfu; Kuve nechokwadi chekuita zvakanaka, zvinonyanya kukodzera gasi chromatography, uye kuve nechokwadi chekuti Septum haina kuwira mumuenzaniso mumuenzaniso panguva yekuita jekiseni.
Iyo yekuzvinamatira-yemahara maruva maitiro inoshandiswa kusanganisa iyo polytetrafluorohlene membrane uye iyo silicon rubber kana silicone bond pamwe kuchengetedza hunhu hwakanakisa hwezvinhu zviviri. Iyo polytetrafluorootheryley layer yeSeposite seposine iri kusangana neiyo reagent. Izvo zvinoremerwa nemakemikari uye zvinodzivirira acid, Alkali, tembiricha, uye kuderedza. Izvo hazvishande neakarongedzwa acid, yakaisvonaka alkali, kana kuti yakasimba oxidants kunyange pakupisa kwakanyanya. Panguva imwecheteyo, iyo elasticity yeSilicone Rubber kana Silicone Layer inogona kuve nechokwadi chekuisa chisimbiso.