The motion of passive admixture of spherical particles in the stationary hydrodynamic field CLASSIC SHAMPOO ONE AND THE CONDITIONER of a swirling flow is studied.A spherical particle of a given mass in the hydrodynamic field of a swirling flow is located on a certain circular orbit, where the centrifugal force is compensated by the radial drag force due to the sink.This leads 6.07 to the separation of the host fluid and admixture.A theory of Brownian motion of admixture in dilute solutions with a non-uniform flow is constructed.