Final answer:
The mandatory doneness test for disinfectants must show no growth in 59 of 60 replicates as per AOAC standards and should be repeatable. This ensures the effectiveness of disinfectant products. In food safety, a thermometer is used to confirm the doneness of food.
Step-by-step explanation:
The mandatory doneness test is a critical procedure for confirming the efficacy of disinfectants. According to the Association of Official Agricultural Chemists International (AOAC), it is essential that a minimum of 59 out of 60 replicates must exhibit no growth in the test for the results to be considered acceptable. These tests must also be replicable across different batches of disinfectant and when conducted on different days. In the context of food safety, using a thermometer to ensure food reaches the necessary temperature to eradicate harmful bacteria is a practical application of doneness testing.