The laboratory water bath thermostat WB-4 is designed for technology realizations in chemical, pharmaceutical, medical and biological processes. For stirring of heating substances in laboratory the WB-4MS model with magnetic stirrer is also accessible. WB-4 and WB-4MS Microprozessor laboratory water bath thermostats are applicable in all areas of laboratory research & education in biotechnology, molecular biology, biochemistry, cell-biochemistry, microbiology, chemistry, cytology, cytochemistry, medicine, genetic, gene engineering, PCR-diagnostic, food quality analysis.