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 can meet requirements for determining aniline point of transparent oils and aniline point of dark color oils. Digital temperature controller. High temperature control precision. Stable and reliable. Easy to operate.