Topics - Reduced plate height

Reduced plate height The plate height is measured normally in centimeters and is calculated as the column length divided by the column efficiency (the number of theoretical plates in the column). The concept of the reduced plate height and the reduced mobile phase velocity was introduced by Giddings. The curve relating reduced plate height to reduced mobile phase velocity provided curves from which the packing efficiency could be assessed. The reduced plate height is the plate height measured in units of the mean diameter of the particles of the packing. Thus, it is the plate height in centimeters divided by the particle diameter in centimeters.The reduced mobile phase velocity is the product of the linear mobile phas velocity and the paricle diameter devided by the Diffusivity of the solute in the mobile phase.