Dry heat sterilizers are devices used to eliminate microorganisms from medical and laboratory equipment. They operate by circulating hot air, typically at temperatures between 160°C and 180°C, for a specified duration. This method is effective for materials that can withstand high temperatures, such as glassware and metal instruments. Unlike steam sterilization, dry heat sterilization does not use moisture, making it suitable for items that may be damaged by wet heat. Common applications include the sterilization of surgical instruments and laboratory tools, ensuring they are free from harmful pathogens before use.