Which temperature is NOT suitable for hand washing sinks?

Hand washing sinks are critical in ensuring proper hygiene and food safety in any food service establishment. The suitable temperature for hand washing is typically set between a range that is comfortable for the user and effective at removing pathogens—usually around 38 to 43 degrees Celsius (100 to 110 degrees Fahrenheit).

The choice of 60 degrees Celsius for hand washing sinks is not suitable because it is too hot for comfortable use by personnel. At this temperature, it could cause burns or discomfort, discouraging regular hand washing, which is crucial in preventing cross-contamination and maintaining food safety. Therefore, any temperature that risks creating an unsafe situation for employees will not meet the standards required for effective hand washing procedures.

In contrast, the other temperatures provided may also be high, but they are marginally more tolerable than 60 degrees Celsius. However, none of these options is ideal for hand washing, but 60 degrees Celsius is definitively the least suitable among them.