which type of thermometer measures the temperature of food and equipment surfaces
â¢ If using hot water to sanitize, use a calibrated thermometer to measure the water temperature. Refer to Using and Calibrating Thermometers SOPs. HACCP-Based SOPs 3 Cleaning and Sanitizing Food Contact Surfaces, continued (Sample SOP) MONITORING, continued: 3. Ensure that food contact surfaces reach a surface temperature of 160 o F or above if using hot water to sanitize. MONITORING: Foodservice employees will: 1. During all hours of operation, visually and physically inspect food contact surfaces of equipment and utensils to ensure that the surfaces are clean.