Chromolith Flash NH2 25-4.6 HPLC Column, 130 A, 2 um, 4.6 x 25 mm - 152026

Merck Chromolith® Flash NH2 25-4.6 HPLC Column, 130 Å, 2 μm, 4.6 mm I.D. x 25 mm Length

Product Number: 152026

Analytics and Sample Preparation > Analytical Chromatography > Analytical HPLC > Chromolith® HPLC Columns 

Chromolith® aminopropyl-modified columns possess medium polarity, between those of bare (normal-phase) silica and reversed-phase silica. Consequently, they display hydrophilic as well as hydrophobic properties, and can be used under both reversed-phase and normal-phase conditions. However, retention is weaker than on silica or RP supports. In acidic solutions, the NH2 groups are protonated (-NH3 + X– ) and display the characteristics of a weak anion exchanger. Hence, the columns can also be used as ion exchangers. Chromolith® NH2 columns offer high matrix tolerance and analysis speed, as well as an extended lifetime within the pH range of 2.5 to 7.5. These columns are suitable for the separation of anions, organic acids, and carbohydrates (mono and disaccharides, such as fructose, glucose, sucrose, maltose and lactose).

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