HPLC columns, Cogent UDA™
Analytical, Undecanoic acid (WCX), Stainless steel, 120 Å, 2 µm, 2,10 mm, 50 mm
554-6486
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.
- Column Format:Analytical
- Ø int.:2,10 mm
- Particle Size:2 µm
- Pore size:120 Å
- Length:50 mm
- Seq:78
- Column hardware:Stainless steel
- Phase:Undecanoic acid (WCX)
- Carbon load:14 - 15%
- Cat. No.:554-6486
- Endcapped:No
- Temperature limit:80 °C
- pH range:2 - 8
- Surface area:340 m²/g