Figure 5From: Physical property relationships of the Rotokawa Andesite, a significant geothermal reservoir rock in the Taupo Volcanic Zone, New ZealandGas permeameter used to measure permeability at University of Strasbourg (not to scale). Confining pressure of 2Â MPa was applied using distilled water as the pressurizing media, and pore fluid was dry argon gas supplied at 1.5Â MPa for a net effective pressure of 0.5Â MPa.Back to article page