Petroleum testing is the analysis during upstream, midstream, and downstream production processes of petroleum products. It is most commonly used to test petroleum product, its product components, byproducts of crude oil, fuel, natural gas, upstream oil and gas and other formats of petroleum. - The heating power is continuously adjustable. The power is shown visually by voltmeter. The temperature control mode is advanced and reasonable. The structure is designed small and exquisite. The stainless-steel table board is beautiful and easy to clean. Operation is easy. Test results are precise. It has been chosen as the instrument to test the closed cup flash point by many metering and detecting institutes.