Lub kaus mom rau ntsia hlau xov vials yog muaj nrog ib qho qhib qhov siv rau autosamper siv thiab tus qauv txheem ntxiv lossis nrog ib qho khoom ruaj khov rau cov qauv cia. Teflon thiab silicone roj hmab lossis ultomone roj hmab lossis ultra-ntshiab silicone yog siv los ua cov ntaub ntawv raw kom ntseeg tau tias septa tsis muaj tshuaj lom; Txhawm rau kom ntseeg tau zoo heev rau cov haujlwm roj hmab chromatography, thiab kom ntseeg tau tias lub sepomatography, thiab kom ntseeg tau tias lub sepomat tsis poob rau cov qauv sib xws thaum cov txheej txheem kev txhaj tshuaj.
Tus txheej txheem nplaum-pub dawb yog siv los ua ke polytetrosraToroethylene membrane lossis silicone bond ua ke kom muaj cov yam ntxwv zoo ntawm ob cov ntaub ntawv. PolytetraTrafluoroethylene txheej ntawm cov composite septum yog sib cuag nrog lub reagent. Nws yog tshuaj lom neeg thiab tiv taus cov kua qaub, alkali, ntsuas kub, thiab adhesion. Nws tsis ua haujlwm nrog concenrated acid, concentrated alkali, lossis muaj zog oxidants txawm nyob ntawm qhov kub. Nyob rau tib lub sijhawm, cov elictity ntawm silicone roj hmab lossis silicone txheej tuaj yeem ua kom nruj kev ua tau zoo.