What should the operator mark on the temperature recording chart after completing the holding time of vat pasteurization?

The operator should mark the end of the holding period with the air space temperature on the temperature recording chart after completing the holding time of vat pasteurization. This is important because the air space temperature at the conclusion of the holding time is crucial for confirming that the product has been maintained at the required temperature for the adequate duration, ensuring effective pasteurization.

Accurate documentation, such as marking the end of the holding period, serves as a verification point to demonstrate compliance with pasteurization standards. This specific practice allows for monitoring and ensuring that the pasteurization process has achieved the necessary microbial reduction, contributing to the safety and quality of the processed dairy product.

Choosing to mark the start of the pasteurization process, temperature of the inlet line, or temperature fluctuations would not provide the necessary information to effectively validate the completion of the holding time, which is vital for regulatory compliance and food safety standards.