EVs are currently a hot field of research. EVs are essentially membrane-bound samples of cellular plasma containing RNA and proteins. EVs play an important role in intercellular communication and there is strong evidence suggesting that EVs can be used as diagnostic biomarkers and for treatment monitoring of many diseases, including cancer. There is a fast-growing market for nanoparticle applications and, as a consequence, a fast-growing need for nanoparticle analysis tools. Typical features of interest are size, concentration and size distribution.