Bonna-Agela SPE products have been developed based on a thorough understanding of interactive natures of chemical molecules. Our SPE products thus can better meet customer’s needs. Our R&D results demonstrated that the adsorption/desorption property of the polymeric SPE materials are regulated by the types of the functional groups and the degree of substitution of the surface modification. In general, modification with electron donor groups will help to retain the electron-deficient molecules, while modification with electron-withdrawing groups will prefer to retain the electron-rich molecules. Different SPE materials have been developed by incorporating proper types of functional groups and the degree of substitutions on the surface, and thus providing optimized and balanced performance for all types of molecules.
Cleanert PEP-2 is made of polydivinylbenzene on which the surface is functionalized with vinyl pyrrolidone and urea. PEP-2 has stronger retention of polar compounds than PEP.
Cleanert PEP is made of polydivinylbenzene on which the surface is functionalized with vinyl pyrrolidone. The material has a balanced hydrophilic and hydrophobic property and can be used in the entire pH range of 1-14.
It is designed to overcome the limitations of traditional silica based mixed-mode SPE sorbents such as C18/SAX. It is a RP/strong anion exchange mixed-mode polystyrene/ divinylbenzene sorbent, stable from pH 0-14.
Cleanert?PWAX provides the dual modes of retention, weak anion exchange and reversed-phase on a stable polymer sorbent, which improves the retention for acidic analytes.
Cleanert PCX is a mixed-mode, strong cation exchange sorbent which provides dual retention modes of reversed-phase and cation-exchange. It has high surface area and a wide usable pH range of 0-14.
Cleanert PWCX provides dual modes of retention, weak cation exchange and reversed-phase on a stable polymer sorbent, which improves the retention for basic analytes.
Cleanert PS is made of non-substituted polydivinylbenzene. It has larger surface area (>600 m2/g.) and thus greater capacity than reversed phase bonded silica. Cleanert PS can be used for the extraction of non-polar and polar compounds simultaneously.
Cleanert HXN is also made of polydivinylbenzene having surface modified with vinylpyrrolidone. This sorbent is specially designed to extract sulfonyl ureas from water and soil at ppb level. It is less polar than Cleanert PEP and can also be used to extract, enrich and clean up samples from mid polar to high polar compounds.