Regular testing and calibration of the systems displays and probes is the only way to ensure you are transporting your goods at the correct temperature. TTC Refrigeration engineers are all equipped with calibration equipment that is continually checked for accuracy and annually calibrated by a third party Accredited to ISO/IEC 17025:2017TTC offer a calibration service for both food transport vehicles and pharmaceutical transport vehicles to 1,2 and 3 point with digital certification issues and available for online access.