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 make the main hydrocarbon of liquid petroleum products shown on the silica gel adsorption column with fluorescent indicator. Then calculate it’s volume percentage. This will be regarded as the quality measurement index of engine fuel, aviation fuel and other fuel oils. Vertical type and uni-body design. No need to install. It is a kind of professional instrument determining percentage of aromatic hydrocarbon, olefin and saturated hydrocarbon in petroleum fraction. Equipped with a adsorption column cleaning unit. Solve the problem for cleaning the adsorption column.