KM-NH

KM-NH HPLC columns carry the Vintage Chrom KSil Amino phase, an amine-bonded silica for normal-phase and HILIC-style separations of sugars and other polar analytes. Food, beverage and pharmaceutical laboratories use amino columns where reversed-phase packings give little or no retention.

There are 54 listings in 125 × 4 mm and 125 × 4.6 mm formats, each on 100 Å silica, with 3.5 µm, 5 µm and 10 µm particle sizes. Compared with the larger Amino section, which lists Bond Amine HD columns in three pore sizes, KM-NH offers one pore size with an extra choice of bore.

If your existing method uses a 4.6 mm amino column with 5 µm particles, the equivalent KSil Amino listing is the direct match. Use 3.5 µm for closely eluting sugars and 10 µm when loading matters. For advice on amino versus diol chemistry for a carbohydrate assay, get in touch.