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 content of petroleum products and to determine the water content of lubricating grease. It adopts double-unit structure. It can do determination for two samples. The gripper is designed reasonably. The installation and dismantlement are convenient.