of the apparent molecular weight distributions of natural organic matters (NOM) [204]. The same technology was applied to compare eEPS solutions obtained from different configurations,
operating conditions or treatment plants (Fig. 12). Preliminary results revealed, for example, the similarity of the eEPS profiles between different treatment plants [13,30,165]. This confirms previous findings obtained with CASP sludge. Size exclusion chromatography combined with infrared microspectroscopy techniques was used for CASP sludge [191].