Waa hab lagu tirtiro dhammaan noocyada noolaha yaryar ee keeni kara cudur, oo ay ku jiraan bakteeriyada, fangaska, fayrasyada, iyo xitaa abuurka adag ee bakteeriyada (spores).
Waxaa inta badan lagu sameeyaa qalabka caafimaadka iyo shaybaarka iyadoo la adeegsanayo:
- Kuleyl (Autoclave/steam under pressure)
- Kiimikooyin gaar ah
- Shucaac (radiation)
Ujeedada Nadiifin-dhammeystiran waa in qalabka caafimaad ama agabka shaybaarka loo diyaariyo xaalad gebi ahaan nadiif ah si aan loo gudbin caabuq.
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Nadiifin-dhammeystiran (Sterilization)