Kalpak Instruments & Controls supplies Mass Flow Based Micro Leak Testing Machine. Kalpak Instruments & Controls manufactures a wide range of electronic test and measuring instrumentation for various industrial applications. The Mass Flow Based Micro Leak Testing Machine of model number MELD-4000 senses flow rate and uses the method of Thermal Mass Flow measurement to test leaks. The Mass Flow Based Micro Leak Testing Machine is useful where leak is specified in standard flow units, with part to part internal volume variations, where test pressure causes test part deflection with high leakage flow.