| abstract |
The invention provides a method for the formation of a particulate product which comprises the co-introduction of a supercritical fluid and a vehicle containing at least one substance in solution or suspension into a particle formation vessel, the temperature and pressure in which are controlled, such that dispersion and extraction of the vehicle occur substantially simultaneously by the action of the supercritical fluid. The invention also provides a particulate product of such a method; apparatus for use in carrying out the method; and a nozzle for use in the apparatus for co-introducing fluids into a particle formation vessel. |