AQUASIL C18 columns from Thermo Fisher Scientific offer alternative selectivity, and are ideal for retention of polar compounds and methods requiring highly aqueous mobile phases. 

AQUASIL C18 capillary columns for chromatography of difficult polar compounds

Thermo Scientific* Aquasil C18 DASH-HTS HPLC columns retain polar molecules twice as strongly as a conventional C18 phase.

Thermo Scientific* Aquasil C18 HPLC Columns provide greater retention than C18 for polar molecules.

Thermo Scientific* Aquasil C18 HPLC Columns provide greater retention than C18 columns for polar anlaytes.

Thermo Scientific* HyPURITY Aquastar HPLC Columns are polar endcapped for alternative selectivity.