Typically, the temperature for dry heat sterilization is 160°C and the sterilization time is 2 hours. If you are sterilizing items such as glass syringes, the temperature is 170°C and the sterilization time is 1 hour. Dry heat sterilization is a technique that allows you to kill bacteria and bacterial germs with high temperatures in a dry environment, mainly for items that cannot tolerate hot and humid steam.
First, the temperature and time of dry heat sterilization
1, the appropriate temperature and duration of dry heat sterilization
In general, the temperature of the items for dry heat sterilization is 160 ℃, which can last 2 hours. If the glass syringes and other items are sterilized, the temperature is 170 ℃, the sterilization time is 1 hour.
2, the sterilization principle of dry heat sterilization
Dry heat sterilization is a dry environment with high temperature to kill bacteria and bacterial germs of the technology, mainly used for can not tolerate hot and humid steam and can not be sterilized with high-pressure steam items.
Second, dry heat sterilization is suitable for what equipment
1, can be dry heat sterilization in which equipment
Usually, dry heat sterilization can be carried out in the oven. Dry heat sterilization for some heat-resistant materials have greater damage, so can not be dry heat sterilization applied to heat-resistant materials.
2, what are the dry heat sterilization method
(1) dry bake: can be used directly in the dry oven, glassware, porcelain and other items heated 160-180 ℃ for 2 hours will be able to kill all microorganisms.
(2) cauterization or incineration: cauterization is a direct flame to kill microorganisms, for metal equipment that is not afraid of heat. Incineration is a thorough disinfection method, but it is limited to the disposal of discarded contaminated items, such as garbage, useless clothes and so on.
(3) infrared: infrared sterilization is mostly used in medical equipment, it is somewhat similar to the sterilization effect of dry heat sterilization.
(4) microwave: microwave is often used in food processing, it can also be used in hospitals, such as laboratory supplies, non-metallic instruments, sterile sickroom food utensils, medicine cups and other supplies for sterilization.