HPLC columns, Cogent UDA™

Supplier: MicroSolv
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Cogent UDA™
554-6246EA 1660 GBP
554-6246 554-6268 554-6489 554-6245 554-6267 554-6242 554-6241 554-6240 554-6486 554-6269 554-6247 554-6260 554-6280 554-6279 554-6257 554-6235 554-6256 554-6278 554-6277 554-6275 554-6274 554-6273 554-6250 554-6272 554-6493 554-6494 554-6497 554-6498 554-6237 554-6236 554-6258 554-6499 554-6490 554-6270
HPLC columns, Cogent UDA™
Chromatography Columns
These carboxylic acid HPLC columns have a silica hydride surface similar to other TYPE-C™ Silica phases but the uniqueness of Cogent UDA™ is that they can exhibit weak cation exchange properties in addition to RP and ANP retention; a mixed mode is possible with some mobile phases conditions.

  • Weak cation
  • Mixed mode

A terminal carboxylic acid group contributes some additional selectivity in this column and when the mobile phase is above pH 5,9, the acid group becomes 90% negatively charged and at pH 6,9 is 99% charged and may act as a cation exchanger. Below pH 4,9, the group does not have significant ion exchange properties.
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