Fig. 4From: Porosity–permeability relationship derived from Upper Jurassic carbonate rock cores to assess the regional hydraulic matrix properties of the Malm reservoir in the South German Molasse Basin(modified from Filomena et al. 2014)Test design for permeability measurement on cylindrical core samples. a The core sample is placed between axial pressure stamps and connected to pore fluid pressure pumps establishing vertical flow. The sample is jacketed by a Hassler sleeve in order to separate pore and confining pressure. b Tiny Perm II minipermeameter to determine permeability by applying a vacuumBack to article page