[en] The study of backmixing (axial dispersion) is essential to arrive at a reliable control system of a pulsed extraction column. Since axial dispersion is a controlling factor in any dynamic model of a column, an understanding of single phase dispersion will be useful in interpreting the dispersion in a two phase system. The present work is carried out to find the effect of various parameters such as continuous phase velocity, pulse amplitude and frequency for a pulsed perforated plate column for single phase flow. (author)