HPLC Column, RP C18, 3um, 4.0mm ID x 250mm Length, 100A. Cogent Brand. 1 EA.
This Cogent RP C18™ Stationary Phase has been a premium value and used by HPLC laboratories for many years. It is double end capped (fully), with traditional bonding of an 18 carbon silane to the highest purity silica available, making this column ideal as an Alternate Column in USP Methods that use the L1 Classification with 3um particle size stationary phases, or for new methods.
The 3µm Particle in this column makes it more efficient than a similar 5um column of the same phase and you will experience sharper peaks. However, due to the smaller particle size, there is and increased back pressure and methods that use longer columns and viscous solvents may exceed the pressure limits of your instrument. Used for hydrophobic or neutral compounds in Reversed Phase, this Octadecyl Phase is excellent for long chain fatty acids.
This column is often chosen for starting points of new methods or for Substitution for USP L1 Methods.