Description
All Chromolith® columns are made of monolithic silica with a characteristic bimodal pore structure. Chromolith 4.6 mm columns have macropores with 2 µm diamter, giving a column efficiency exceeding 80,000 plates/meter. The mesopores are 13 nm (130 Å), the surface modification is octadecylsilan with full end-capping.
Analysis Note
Appearance: conforms
Carbon content: 17,0 - 18,6 %
Pressure: ≤ 30 bar
Stability testing: conforms
Performance (anthracene)
Theoretical Plates (N/m) (Anthracene): ≥ 80000
Capacity factor (Anthracene): 3,9 - 4,6
Tailing (USP): 0,90 - 1,60 %
Selectivity separation factor (anthracene/progesterone): 1,95 - 2,35
Chromolith® is a registered trademark of Merck KGaA, Darmstadt, Germany
