The GDS Advanced Pressure/Volume Controller (HPDPC) is a general-purpose water pressure source and volume change for the precise regulation and measurement of fluid pressure and volume change. The advanced version offers the highest level of accuracy, resolution and control and is the defacto standard for research devices. The high pressure version is available in pressure ranges from of 8MPa to 100MPa and a volumetric capacity of 200cm3. High pressure controllers can be used with water, oil or air.