The CALT 9 leakage tester has been designed and developed to measure leakage rates and is particularly suitable for measuring and calculating the leakage rate of double O-ring seals as fitted to packages for the transport of radioactive materials. The CALT 9 uses the pressure drop or pressurise method to give a quantitative result. The … Continue reading CALT 9 now fully in use to replace CALT 8 and CALT 5