Leak Detector Calibration HT Products can provide a range of calibration services for leak detectors of all kinds. EN14624 : European Standard for refrigerant leak detection equipment and compliance with EU/UK F-Gas legislation. International HVAC/R Standards Calibration of Leak Detection Equipment On-Site Calibration of Leak Detection Equipment – at HTP Works Full certification Calibration and testing of RGA systems Calibration gas mixtures