Pasteurization: What you need to know

The safety of food is taken for granted by consumers. The preservation of food via the process of pasteurization in autoclave pots which could be full-water immersion or shower type autoclaves or retorts is essential for this.


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  • Inactivation of pathogenic germs to increase food shelf-life with complete preservation of nutrients via a core temperature of between 60 °C and 100 °C
  • Systems should be validated once a year.
  1. Warm-up phase The water temperature is brought to the previously defined pasteurization temperature of 95 °C, for example, in an autoclave pot.
  2. Pasteurization The pasteurization temperature is reached throughout the system and there is homogeneous temperature distribution. The process duration and pasteurization temperature vary depending on the product.
  3. Cooling phase The product is removed from the autoclave pot and brought to room temperature. Depending on the product and system type, clean-in-place cleaning (CIP) is necessary to prevent the formation of micro-organisms in the system.
  • Checking and regular verification as to whether the pasteurization process is effective
  • Determination of the correct hold times/pasteurization temperatures and the P-value
  • Measurement of temperatures at the coldest point in the process
  • Correct placement of the data logger is crucial for ensuring the reliable killing of germs in the product
  • testo 191 HACCP data logger system consisting of HACCP robust data loggers, easy to use software and multifunction case
  • Measuring range -50 to 140 °C
  • Small battery for placement in small containers
  • A wide range of accessories allows optimal positioning of loggers for the core temperature measurements
  • Simple calculation of P-value and holding phase by the software

The right data logger system for your pasteurization processes

The testo 191 HACCP data logger system

How can the testo 191 HACCP data logger system
help you specifically?