General requirements adsorbent adsorbent: large surface area and a certain adsorption capacity. Not from chemical changes and the agent does not respond or catalytic substances to be separated, decomposition or association, uniform particles. 1. Polar sorbent silica, alumina adsorbents are polar, characterized by: a) for polar substances with strong affinity and capacity dioctyl uses strong polar solute is preferentially adsorbed. b) less polar solvent shelf dioctyl solute to the adsorbent showed strong adsorption capacity. Solvent polarity increased, the adsorption capacity of the adsorbent for solute weakens. c) Even if the solute is adsorbed on silica, alumina, but once joined polar solvent dioctyl offer, but also by the latter replaced eluted. Polar strength of judgment (and functional groups of species, of the number and arrangement of the way): polar proportional lipophilic groups and inversely proportional to the polar hydrophilic groups; free weakly polar compounds, with lipophilic, strong dissociative polar compound, is hydrophilic; polar solvents - to decide based on the dielectric constant. HPLC HPLC high-performance liquid chromatography (HPLC) is the chromatographic analysis of the current application of the most high-performance liquid chromatography system by the mobile phase reservoir fluid bottles, infusion pump, autosampler, column, detector, and recorder, whose overall composition is similar to gas chromatography, but for which the flow characteristics of the liquid phase is adjusted to make a lot. HPLC infusion pumps require a constant steady infusion volume; injection system requires injection facilitate switching tight; mobile phase due to the viscosity of the liquid is much higher than the gas, dioctyl phthalate, high performance liquid chromatography in order to reduce the column pressure column is generally fairly thick, length far less than the GC column. HPLC is widely used, almost throughout all areas of quantitative and qualitative analysis. Xiang dry chemical (Figure) | dioctyl Price Quote | Zaozhuang dioctyl provided by Jinan Cheung Chemical Co. dry. Jinan Cheung Dry Chemical Co. (www.xiangqianhuagong.com) (www.dilunyierchun.com) adhere to the "people-oriented" business philosophy, has a professional staff, and strive to provide the best products and services to contribute to the community, and welcome to new and old customers to visit us and sincere cooperation for a better future. Xiang dry chemical - your trusted friend, Company Address: Industrial Road chemical market, Contact: Mr. You can also access (www.dilunyierchun.com/supply_details_40031240.html), for more information about the company.