A graduate specializing in electrical engineering, Mahmoud Iyad Abu Shab from the wing of Prince Sattam University, who participated in the Sustainable Partnerships Conference organized by the Ministry of Education under the slogan “Research and Innovation towards a Prosperous Economy”, which concluded its activities yesterday, explained to “Previously” that “the device is used to detect Cheating and mixing in petroleum derivatives of various types in a short time and in the same place, where the sample is placed in the device and within 10 seconds the reading appears on the screen benzene 91 / benzene 95, mixed with water or mixed with diesel, for example.