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 distillation characteristics of wax oil, lubricating oils and other petroleum products with high boiling point range. It adopts single chip microcomputer technology, can automatically control the vacuum pressure.