Advantages and disadvantages of traditional thermal sterilization

Advantages: Among all available disinfection and sterilization methods, thermal sterilization is the earliest, most reliable and most widely used method, which can kill all microorganisms, including bacterial propagules, fungi, protozoa, algae, viruses and bacterial spores with stronger resistance, so thermal sterilization is highly valued in industrial disinfection and sterilization.

Disadvantages: There are many factors that affect the effect of thermal sterilization. During thermal sterilization, attention should be paid to the microbial state, water content and pH value of the sterilized materials, and appropriate sterilization temperature and time should be selected to achieve complete sterilization.

Among them, dry heat sterilization is only applicable to solid non-biological materials, Petri dishes, straws and so on. , but not suitable for liquid and biological materials, such as culture media and culture materials. Dry heat sterilization requires a temperature of 160 ~ 162℃ for 2h. The temperature should not be too high. When the temperature is too high, the paper, cotton and cloth for packaging sterilized articles are easily scorched or even burned by hot air.