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 instrument is suitable to determine the water separability of petroleum oils and synthetic fluids. This instrument adopts small bath and desktop structure. The stirring paddle has good concentricity with cylinders. No tremble or touching the cylinder wall. It is easy to operate.