The axis of the vesselwith the two-component liquid in the oritical point of stratification is oriented along the d rection of trial mass in the field of gravitational wave. Suppose that vessel sides are less than the wave length and the rate of equilibrium establishment in such system greater than the rate of the gravitational field of the wave in the place of solution arrangement. Mark the coordinate of the liquid stratification boundary in the constant gravitational field parallel toas ℓo.