This paper describes an experimental study of heterogeneous condensational growth process with limited vapour source in a turbulent flow in a nozzle. The nature, diameter and concentration of the seeding particles are known and controlled. We measure the velocity and diameter of droplets at different positions in the converging part of the nozzle. The experimental results present the diameter evolution of the water coated seeding particles. (C) 2003 Elsevier Ltd. All rights reserved.