The analysis of semi-products at diff erent stages of production and fi nished medicinal products is an integral part of an eff ective quality assurance system for pharmaceutical production. The traditional methods used in the pharmaceutical fi eld, such as capillary electrophoresis, gas and liquid chromatography, are quite versatile and eff ective. However, they are distinguished by the high cost of instrumentation and component materials, the need to use high-purity solvents, the lack of mobility and the possibility of in situ studies.
