HPLC Column: Ultisil XB-NH2, 3μm, 4.0×50mm

Ultisil XB Normal Phase columns are based on ultra-pure ( purity > 99.999% ) type B spherical and totally porous silica. Bare silica, Diol, and NH₂ (Amine) are used for normal phase separations; with Diol and NH₂ often able to deliver more stable results. Diol and NH₂ have the added benefit of reduced sensitivity to the presence of water. Diol and NH₂ can also be used in reversed-phase.

Ultisil XB-NH₂ column is based on propyl-amino silane, mostly used in normal phase, but can also be used in reversed phase. When used in normal phase, the retention mode is weak anion-exchange, while in reversed-phase, it can be used for separation of polar compounds. It is suitable for applications in aggressive normal phase mode with aqueous eluent.