Under the patronage of the Dean of the al-Mustaqbal College University, Hassan Shaker Magdi, and in order to achieve the fourth sustainable development goal (quality education), a group of students in the Department of Chemical Engineering and Petroleum Industries made a poster showing the components of the residual carbon test device from crude oil and petroleum products under the supervision of asst. lect. Ban Ali Hassan. <br />Determining the percentage of carbon remaining after the evaporation of the petroleum product under certain conditions in the Conradson device gives an indication of the amount of carbon remaining in engines that use non-volatile petroleum fuels such as diesel oil and fuel oil, as the - value of the carbon remaining in the igniter fuel serves to identify roughly the fuel tendency To form deposits in torches.<br />The value of the carbon left behind for the remainder of the crude oil after distillation is used for the production of lubricating oil.<br />- The value of the residual carbon of gas oil is considered as a guide in the process of producing gas, as well as its percentage at the end of the internal combustion of gas oil and gasoline car fuel). producing gas, as well as its percentage at the end of the internal combustion of gas oil and gasoline car fuel).