In paper problems of an estimate of methodological approaches to optoelectronic system recordings of the gained components of crude oil build-up after its microwave processing in the evaluator are considered. Approaches for various types of the analysis are given: separation, distillation and glycolysis chemical reaction; the negative factors influencing the optical channel, methods of their elimination or minimisation from the point of view of problems: measurings, detection and discernments; an estimate efficiency of optoelectronic tools application, in structure of the laboratory microwave evaluator of a composition of crude oil from analysis types.