Size exclusion chromatography is an important technique for the analysis of polymers as it delivers the molar mass distribution (MMD). The MMD reflects how variable the polymer is, particularly which short an long chains are present. For many polymers a GPC analysis at low temperature suffices as then the polymer already dissolves. Within LCT and by extension the Faculty of Engineering and Architecture GPC is applied for almost all studies involving polymers. This device is used weekly and results in ca. 15 publications a year. It is an important reference device, specifically for the support of fundamental kinetic studies (e.g. IUPAC) as well as for supporting sustainable polymer design. The current GPC device is from 2009 and replacement is unavoidable, seeing also the lack of spare parts.