kuivahöyrysterilointi

Kuivahöyrysterilointi, also known as dry heat sterilization, is a method used to sterilize materials that are not suitable for autoclaving or other moist heat methods. This process involves exposing items to high temperatures in a dry environment, typically using a specialized oven. The elevated temperatures and prolonged exposure time are designed to kill microorganisms, including bacteria, viruses, fungi, and spores, through oxidation and desiccation.

The effectiveness of dry heat sterilization depends on several factors, including the temperature, the duration of exposure, and the type of material being sterilized. Common temperature-temperature-time combinations include 160 degrees Celsius for two hours, or 170 degrees Celsius for one hour. Materials that can be sterilized using this method include glassware, metal instruments, powders, oils, and some plastics that can withstand high temperatures. It is particularly useful for items that can be damaged by moisture or that are difficult to penetrate with steam.

While effective, dry heat sterilization has limitations. It requires higher temperatures and longer cycle times compared to moist heat sterilization. It is also not suitable for heat-sensitive materials, liquids, or items with complex lumens that might prevent adequate penetration of the dry heat. Proper loading of the sterilization chamber is crucial to ensure effective heat distribution and uniform sterilization of all surfaces. After the sterilization cycle, items must be cooled down before handling to prevent thermal injury.