Product Listing

  • Product Part
    228-59936-91

    Description: Shim-pack MAqC-ODS I reversed-phase columns are packed with a silica gel containing metal and bonded octadecylsilyl group. In addition to the hydrophobic characteristics of the ODS, the metal content also provides cation-exchange effects. This increases the retention of basic compounds. Therefore, this allows use with only a buffer solution as the mobile phase for analyses that previously required using an ion pair reagent and enables using gradient elution. These characteristics are especially beneficial for analyzing water soluble vitamins and pharmaceuticals that contain a large amount of basic compounds. * To use this column efficiently: 1) To increase the retention of basic compounds, please use a buffer solution within the pH 2 to 4 range. 2) In the case of a basic substance tailing, it may be possible to improve the peak shape by increasing the salt concentration of a buffer solution. 3) The elution of basic compounds is faster by increasing the salt concentration, and it is possible to adjust retention by salt concentration.

  • Product Part
    228-59936-94

    Description: Shim-pack MAqC-ODS I reversed-phase columns are packed with a silica gel containing metal and bonded octadecylsilyl group. In addition to the hydrophobic characteristics of the ODS, the metal content also provides cation-exchange effects. This increases the retention of basic compounds. Therefore, this allows use with only a buffer solution as the mobile phase for analyses that previously required using an ion pair reagent and enables using gradient elution. These characteristics are especially beneficial for analyzing water soluble vitamins and pharmaceuticals that contain a large amount of basic compounds. * To use this column efficiently: 1) To increase the retention of basic compounds, please use a buffer solution within the pH 2 to 4 range. 2) In the case of a basic substance tailing, it may be possible to improve the peak shape by increasing the salt concentration of a buffer solution. 3) The elution of basic compounds is faster by increasing the salt concentration, and it is possible to adjust retention by salt concentration.

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