This Cogent NP Amino™ Stationary Phase has been a premium value and used by HPLC laboratories for many years. Not end capped, it is manufactured using a 3 carbon Ligand (propyl) with a terminal amino group bonded to world class silica. This column is ideal as an Alternate in any USP Method that uses the L8 Classification or for new methods.
With a 3µm Particle, this column is more efficient than a 5um column of the same phase and you will experience sharper peaks. However, due to the smaller particle size, there is an increased back pressure. Used for polar molecules with a negative charge such as Sugars and compounds with Carboxylic Acid Groups in Normal Phase or HILIC modes these columns are packed and shipped in Normal Phase Solvents.
This narrow-bore column provides excellent separations but requires a pump that can precisely deliver, and a flow cell that is made for reduced flow rates with lower volumes. This column size is used for LCMS.
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