HPLC columns, Cogent UDA™
Product Details & Documents
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.
Technische Daten
- Formato della colonna:Analitica
- Ø int.:2,10 mm
- Dimensioni particelle:4 µm
- Dimensioni pori:100 Å
- Lunghezza:50 mm
- Seq:24
- Colonna:Acciaio inossidabile
- Fase:Undecanoic acid (WCX)
- Cat. No.:554-6237
- Area superficiale:390 m²/g
- Carico di carbonio:14 - 15%
- Limite di temperatura:80 °C
- Range di pH:2 - 8
- Con endcapping:No
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