The aim of the present study was the pore structure characterization of porous glass derived from a leachable precursor. Two
independent techniques were applied on this purpose. The interpretation of the results obtained by these techniques, i.e.
thermoporometry and nitrogen porosimetry was indicative for their supplementary character in what concerns the calculation
of pore size distributions. The experimental work described in this study gives an example for the monitoring of the compositional
evolution of phase separating compact-glass precursors of porous glasses.