dry heat sterilization
A sterilization method using heated air without moisture to destroy microorganisms on heat-stable instruments.
Full Definition
Dry heat sterilization employs heated air circulation at temperatures typically between 160-190°C to achieve sterility without the presence of steam or moisture. This method is primarily used for instruments that cannot tolerate moisture or steam, such as powders, oils, petroleum products, and certain metal instruments that may corrode in steam. The process requires longer exposure times compared to steam sterilization due to the lower heat transfer efficiency of dry air. Validation involves temperature monitoring and biological indicators specifically designed for dry heat processes.
Usage
Usage note: Distinguish from steam sterilization when editing protocols; often confused in procedural documentation.
In Context
- "The surgical instruments were processed using dry heat sterilization due to their incompatibility with moisture." — sterilization protocol documentation
- "Dry heat sterilization cycles require extended exposure times to compensate for reduced heat penetration efficiency." — quality assurance manual