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.
Spécifications
- Type de colonne:Analytique
- Ø int.:2,10 mm
- Granulométrie:4 µm
- Taille de pore:100 Å
- Longueur:150 mm
- Seq:27
- Matériau de colonne:Acier inoxydable
- Greffage:Undecanoic acid (WCX)
- Plage de pH:2 - 8
- Cat. No.:554-6247
- End-capping:Non
- Temperature limit:80 °C
- Surface area:390 m²/g
- Charge de carbone:14 - 15%
#: 20864.320
Fournisseur: VWR Chemicals
#: 83640.320
Fournisseur: VWR Chemicals
#: 1.00030.2500
Fournisseur: Merck
#: 31770.294
Fournisseur: VWR Chemicals
#: 83645.320
Fournisseur: VWR Chemicals
#: 1.09439.1000
Fournisseur: Merck