What does a Time Temperature Indicator (TTI) monitor?

A Time Temperature Indicator (TTI) is specifically designed to monitor both time and temperature to ensure that food products remain within safe temperature ranges during storage and transportation. This tool helps food safety professionals track critical control points and ensure that food does not enter the temperature danger zone, where harmful bacteria can grow.

By continuously measuring temperature over time, TTIs provide visual feedback on whether a product has experienced unsafe conditions that might lead to foodborne illnesses. They are particularly useful for products that require careful temperature control, as they offer an immediate way to assess whether food has stayed safe during its life cycle.

The other choices do not accurately reflect what a TTI monitors. While pressure and humidity or airflow can be important in other contexts, they are not the primary focus of a TTI. Similarly, cooking and cooling times, while related to food safety, do not encompass the overall monitoring capabilities of a TTI, which specifically targets time and temperature constraints.