SPE-SAX and SPE-WAX are used for the isolation and purification of acidic compounds in basic or neutral medium. Based on a mixed mode of anion ion exchange and hydrophobicity interaction with functional quaternary / tertiary amino groups, SPE-SAX and SPE-WAX can quickly and steadily recover acidic compounds from the samples for purification, for example, estrone, adenine, nucleosides, etc. Product Name Feature Strong Anion Exchange chromatography Mix mode sorbents with a strong anion exchange and reverse retention; Highly selective for acidic analytes , stable in organic solvents Weak Anion Exchange chromatography Weak anion exchange and reverse retention mechanism. For the retention and release of strong acidic analytes. Stable in organic solvent .
EPRUI Biotech develops a series of size controllable HPLC packing which is especially for the analysis and separation of carbohydrates including fruit juice containing organic acid, sugar alcohol, simple sugar, polysaccharide and so on. It is a kind of cationic exchange chromatography media which is prepared by sulfonating PS/DVB microspheres to make it hydrophilic following by chelating of various ions such as hydrogen(H+),calcium (Ca2+) and sodium (Na+). Ligand exchange is a preferred method for the chromatographic analysis and separation of many sugars and sugar alcohols due to the advantage of simply using water as eluent. In the process of ligand exchange, the negatively charged hydroxyl groups in carbohydrate molecules interact with the positively charg
SPE-HLB sorbents are produced with a special polymerization technique. It is corrresponding to Water Oasis HLB or Phenomenex Strata X. They are reverse phase sorbents wettable by water with balanced hydrophilicity and hydrophobicity capable of satisfying most solid phase extrction needs. Monodisperse microspheres in SPE-HLB sorbents are made with outstanding ability to retain polar compounds. They are quite suitable for the isolation of compounds with none or medium polarity. Due to a large surface area, SPE-HLB has a very high adsorption capacity which not only effectively reduces flowthrough, but also substantially decreases the volume of eluent passing through a compact column thereby raising the elution stability and speed. It is suitable for separation a
SPE-SCX and SPE-WCX sorbents are polymer microspheres with functional sulfate or carboxyl groups based on a mixed mode of cation ion exchange and hydrophobicity interaction, they are used to separate and analyze alkaline compounds such as amphetamines, melamine, chloropheniramine, phencyclidine, etc. Due to high surface area of the microspheres and ion exchange capacity of sulfate groups, SPE-SCX and SPE-WCX can effectively and steadily adsorb basic compounds, and retain them well in comparison with known products from the current leading companies. SPE-SCX and SPE-WCX sorbents hold the stability of the bonded phase across the entire pH range of 1 to 14 and greatly widen the conditions for separation exploration. Furthermore, SPE-SCX and SPE-WCX columns have