We alreaChromatography silica gel selects high-quality silica gel as raw material for processing. Its main feature is to achieve the purpose of separation and purification through the difference in the adsorption and storage time of the other components of the mixture. A colloidal system with solid characteristics, composed of colloidal particles that form an aggregated structure. Colloidal particles are polycondensates of silicon (polysilicic acid) in a hydrated state, and are amorphous substances. The spacing of the colloidal particle assembly forms the microporous structure inside the silicon particles of the reagent column layer. Therefore, it is a high-quality adsorption material with high specific surface area, high purity, high activity, and rich microporous structure. Chromatographic silica gel separates substances based on their ability to absorb silicon. Generally speaking, substances with high polarity are easily adsorbed on silicon, and substances with weak polarity are not easily adsorbed on silicon. The whole layer analysis process is the process of adsorption, desorption, re-adsorption, and re-desorption. Silicon layer analysis is mainly used for the purification of petroleum products, the removal of aromatic substances, the separation and purification of the effective components of Chinese medicinal materials, and the preparation of high-purity substances.dy passed the factory audit from Disney, MacDonald, TARGET, Coca-Cola and SEDEX.