A higher quality scan of the Savonnières limestone sample (6 mm diameter) saturated with demineralized water was acquired in 29 minutes. The EMCT micro-CT scanner (designed and built in collaboration with TESCAN XRE, Belgium, www.xre.be) at UGCT (Ghent University, Belgium, www.ugct.ugent.be) was used with an accelerating voltage of 100 kV and a target power of 6 W. The scan consisted of 2200 projections. The raw data was reconstructed to a 3D volume using Acquila (TESCAN-XRE, Belgium). The reconstructed voxelsize was 7.3 µm. After resampling and registration to the scans of the tracer injection experiments (Savonnières limestone sample, 0.25 µl/s), the voxelsize was 14.6 µm.
