Van Deemter Equation - Plate Count

Plate Count

The plate height given as:

with the column length and : the number of theoretical plates can be estimated from a chromatogram by analysis of the retention time for each component and its standard deviation as a measure for peak width, provided that the elution curve represents a Gaussian curve.

In this case the plate count is given by:

By using the more practical peak width at half height the equation is:

or with the width at the base of the peak:

Read more about this topic:  Van Deemter Equation

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