Аннотация:We describe the construction of laser-based spectrometer for express non-contact analysis of composition of liquids and concentration of their admixtures. The review of its possible technological and ecological applications is given. The most important areas of its usage include detection of flammable, toxic or explosive liquids, quantification of organic substances and inorganic salts in liquids, in-line control of technological fluids in factories and variety of ecological applications. The instrument utilizes the principles of laser-induced Raman scattering and fluorescence spectroscopy and is equipped with advanced algorithms of data analysis. We report on the first results of quantification of methanol, isoamyl alcohol and acetic acid in binary mixtures with water using special algorithm of Raman intensity normalization.