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 kinematic viscosity of liquid petroleum products (Newtonian fluids) at a constant temperature. This instrument adopts hard glass bath and electric stirring device. Easy to observe the sample.The temperature in water bath is uniform.