Аннотация:A device for measuring with high accuracy the distribution speed of ultrasonic fluctuations in various structures of mineral oil is developed. The device is notable for small dimensions, high sensitivity (reproducibility of results achieves 0.01 %), short time spent for single measurement (0.5 sec.), small volume of required test sample (about 10 ml). In spite of the fact that the developed device is focused on mineral oil control, it also can be used for control of other liquids at various stages of their manufacture, storage and transportation. The design of the device model, an algorithm of its work and comparative results of measurements carried out on various gasoline grades are given.2002-04 Shevelko M.M., Peregudov A.N., Kovalevsky M.V., Sokolov A.O. Ultrasonic device for mineral oil control // Book of abstracts “Elastic wave effect on the fluid in the porous media”.- Moscow, Gubkin University. 2002.- C.23.