Raw projection data of 49 repeat micro-CT scans of 15 s each (recon1 - recon49) was acquired during the experiment. A 10 wt% CsCl solution was injected in the sintered glass sample (6 mm diameter) with a volumetric pump velocity of 0.50 µl/s. 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 130 kV and a target power of 16 W. Every (back-to-back) scan consists of 750 radiographs (exposure time 20 ms) acquired over 360°. The different rotations (scans; zip files) can thus be reconstructed individually or can be recombined to different reconstruction intervals. Information about the scan parameters can be found in the attached text file. A dark field and flat field image are provided as well (respectively di.tif and io.tif).