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What do the numbers mean in the column name?

April 26, 2017column mean Numbers

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What do the numbers mean in the column name?

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The number in the column name corresponds to the pKa value of the embedded ionizable group. For example, for Primesep 100 the pKa of the embedded carboxylic acid is equal to 1.0. In Primesep 200 ,the pKa = 2.0. For this reason, Primesep C can be called Primesep 350 because the pKa is about 3.5. The letter C in the Primesep C column reflects additional c omplex properties of this stationary phase toward primary and secondary amines in high organic mobile phase.