Ion Exchange Columns

Retention is based on the attraction between solute ions and charged sites bound to the stationary phase.  An increase in counter ion (with respect to the functional groups in resins) concentration reduces the retention time. An increase in pH reduces the retention time in cation exchange while a decrease in pH reduces the retention time in anion exchange.

Anion-Exchange Chromatography
Nacalai Cosmogel IEX Type Q(1,000A)
Nacalai Cosmosil DEAE
Nacalai Cosmosil QA
Jordi Protein Peptide SAX
PolyLC PolyWAX LP
Sepax Proteomix WAX-POR
Sepax Proteomix SAX-POR

Cat-Exchange Chromatography
Nacalai Cosmogel IEX Type S (1,000A)
Nacalai Cosmosil CM
Nacalai Cosmosil SP
PolyLC PolySULFOETHYL A (peptides)
PolyLC PolyCAT A
Sepax Proteomix WCX-POR
Sepax Proteomix SCX-POR

Amphoteric Ion-Exchange Chromatography
Nacalai Cosmogel IEX Type M (1,000A)
Nacalai Cosmogel IEX Type M-N
PolyLC PolyCATWAX

Non-Porous Ion-Exchange Chromatography
Nacalai Cosmogel IEX Type Q-N
Nacalai Cosmogel IEX Type S-N
Nacalai Cosmogel IEX Type M-N
Sepax Antibodix WCX
Sepax Proteomix WAX-NP
Sepax Proteomix SAX-NP
Sepax Proteomix WCX-NP
Sepax Proteomix SCX-NP