The goal of realizing a Low Carbon Society drives decision-making processes on a local as well as global level and increasingly gears new technological developments. The corresponding demand for clean energy and the sustainable utilization of resources generates the need to gain a basic understanding of our carbon-based ecological and biological processes, which are mainly located on a nano-sized regime. Within this x?x000nm size range, behaviors and relations of matter constellations are governed by novel principles covered within the field of nanotechnology. More than ever, smart measurement technologies are needed to screen characteristics such as size, structure and nano interactions to assess emerging products and procedures. One promising technology is light scattering, based on the principles of light-matter interactions. The commercially available device investigated in this thesis, the Dark V from the company ConSenxus GmbH, uses this technology in a MALS/AF4/RI setup, which is capable of clarifications on the nanoscale. In order to investigate the relations and influences of the main components and their structural implementation in this device, experimental tests on photon detectors, optical fibers, flow-through cell, sample handling and laser installment were performed. It was found that the used photon detection units showed different gains and an unstable behaviour in a long-term measurement setting. The used optical fibers showed signal-influencing actions due to mechanical instabilities. The scattering cell and its sample handling were examined, and it was discovered that the usage of two separated flows within the cell created undefined conditions concerning sample concentrations and mass recovery within the system. Lastly, the used laser module was, during a device service, found to irradiate an undefined and unstable laser mode, which influenced the measurements immensely. Suggestions for enhancements and further assessments are given.