Hot air oven

Using dry heat to sterilize they use a thermostat to control the temperature. Their double walled insulation keeps the heat in and conserves energy, the inner layer being a poor conductor and outer layer being metallic, there is also an air filled space in between to aid insulation, an air circulating fan helps in uniform distribution of the heat. These are fitted with the adjustable wire mesh plated trays, or aluminum trays and may have an on/off rocker switch, as well as indicators and controls for temperature and holding time. The capacities of these ovens are vary.