It is calculated using Equation 6. Because of improvements in coating technology, this is not longer the case, and H actual is usually more heavily impacted by extra column contributions than by the column per se. Column contributions to H actual became more meaningful with increasing film thickness, or polarity, both of which affect stationary phase diffusion. The higher the resolution the less the overlap between two peaks.
Resolution takes both a and the width of the peaks into account.
It is calculated using either form of Equation 7. Numbers greater than 1.50 indicate there is baseline between the peaks. Numbers less than 1.50 indicate there is some peak co-elution. Examples can be found in Figure 2. Figure 2 .