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Soil steam sterilization (soil steaming) is a farming technique that sterilizes soil with steam in open fields or greenhouses. Pests of plant cultures such as weeds, bacteria, fungi and viruses are killed through induced hot steam which causes vital cellular proteins to unfold. Biologically, the method is considered a partial disinfection.
Typical steam sterilization cycles are between 3 and 30 minutes at 121–134 °C (250–273 °F) at 100 kPa (15 psi), but adjustments may be made depending on the bioburden of the article being sterilized, its resistance to steam sterilization, the article's heat tolerance, and the required sterility assurance level. Following the completion of ...
Sterilization can also be achieved using ethylene oxide (ETO) gas. This process was created in the 1950s by the US military [4] and is used on items that cannot withstand the high temperatures of steam sterilization. ETO sterilization takes far longer than steam sterilization and is hazardous to workers, so alternative methods were created in ...
Koch's or Arnold's steam sterilizer: used for steam sterilization A pressure cooker: used as a portable autoclave Biological and chemical indicators: Used to ascertain if a certain process has been completed, e.g. spores used in an autoclave are killed if autoclaving is properly done Filters: •Candle filter:
The first two are the most widely used methods of sterilization mainly because of their accessibility and availability. Steam sterilization is one of the most effective types of sterilizations, if done correctly which is often hard to achieve. Instruments that are used in health care facilities are usually sterilized with this method. The ...
Steam at 134 °C (273 °F) can achieve a desired level of sterility in three minutes, while achieving the same level of sterility in hot air requires two hours at 160 °C (320 °F). [11] Methods of air removal include: Downward displacement (or gravity-type): As steam enters the chamber, it fills the upper areas first as it is less dense than air.
Sterilization may refer to: Sterilization (microbiology), killing or inactivation of micro-organisms; Soil steam sterilization, a farming technique that sterilizes soil with steam in open fields or greenhouses; Sterilization (medicine) renders a human unable to reproduce; Neutering is the surgical sterilization of animals
ISO 11138-5:2017 Part 5: Biological indicators for low-temperature steam and formaldehyde sterilization processes; ISO/TS 11139:2006 Sterilization of health care products - Vocabulary; ISO 11145:2016 Optics and photonics - Lasers and laser-related equipment - Vocabulary and symbols