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Adequate sterilization temperature

The new SterilDisk and SterilCyl data logger families made by ­Dostmann electronic (Wertheim, Germany) are made to monitor and record high temperatures of up to 140 °C during food sterilization and pasteurization. This rapidly shows users whether the temperatures necessary for killing microorganisms have been reached.

These devices are primarily used to control the sterilization process, which is normally 120 °C, and pasteurization, normally 90 °C, both of which are needed to disinfect foods, e.g. in cans and glass containers. From the measured temperatures, the data loggers automatically calculate the F0 value, a measurement describing the time necessary for killing microorganisms, as well as the Z value, which measures the heat resistance of microorganisms. The compact devices of food-safe material permit measurements to be made in direct contact with the food, i.e. the actual temperature of the product – not just its environment. This makes monitoring of food transports an additional area in which the devices can be used.

The battery-powered SterilDisk and SterilCyl data loggers each weigh between 35 g and 95 g, depending on the model. The watertight and dust-tight housing made of AISI316L steel, which is suitable for use with foods, is in the IP68 protection class. It is pressure-resistant up to maximal 10 bar. The disk-shaped SterilDisk or cylindrical SterilCyl data loggers are so compact that they can be placed even in the tightest spaces. Due to their narrow construction, the SterilCyl is especially good for use in pasteurization tunnels or bottles. Its tiny size also makes it possible to position several devices in the same chamber simultaneously to obtain a detailed overview of the measurements.

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