Optical method for express control of the state of liquids

A program for express control of the state of liquid media in a time environment is substantiated. Various methods of express control of the state of liquid media are excluded. The main requirements for this method are determined. Presentation of an optical method for monitoring the state of liquid media using refraction phenomena. The use of a small-sized differential-type refractometer for express control of the state of liquid media is substantiated. A structure has been developed and a new principle for determining its refraction of the constitution of a liquid has been proposed. Results of experimental studies.