A new method for hold-up measurement is described. Holdup in the column is calculated from the data on the phase ratio in the samples of the dispersion drawn-off from the column through a capillary at different sample flowrates. Local holdup and drop size distribution have been measured in a 50 mm ID vibrating plate column. It has been found that the drop size distributions at different agitation intensities are similar and that the dependence of the number density on the dimensionless drop volume can be described by the Gamma distribution.