It is a diatomite type of supporter, red in appearance, with special surface property and structure, faintish sorption, good mechanical intensity and retalively high separating capability. It can be used in high-capability chromatographic column. After being dip-coated with different immobile liquids, it can be used to analyse or separate the alkane, alkene, arene, alcohol ketone and lipid etc. The max. column efficiency can be up to over 1,000 pieces/meter. It can also be used in the separation of gas hydrocarbon compound and complex gas hydrocarbon compound as well as the rapid analysis of hydrocarbon combustion products