Which guideline is essential for the proper use of thermometers?

The guideline of cleaning, sanitizing, and calibration is essential for the proper use of thermometers because these practices ensure accurate temperature readings, which are critical in food safety. Thermometers can become contaminated if not cleaned and sanitized properly, potentially leading to cross-contamination in food handling. Additionally, calibration is necessary to verify that the thermometer is providing accurate readings. Regular calibration accounts for any shifts in accuracy that may occur over time, allowing for reliable measurements that help prevent foodborne illness by ensuring that foods are cooked and stored at safe temperatures. Implementing these practices helps maintain the integrity of food safety protocols in any food service environment.