Thermodynamic limit for polydisperse fluids

We examine the thermodynamic limit of fluids of hard core particles that ar e polydisperse in size and shape. In addition, particles may interact magne tically. Free energy of such systems is a random variable because it depend s on the choice of particles. We prove that the thermodynamic limit exists with probability 1, and is independent of the choice of particles. Our proo f applies to polydisperse hard-sphere fluids. colloids and ferrofluids. The existence of a thermodynamic limit implies system shape and size independe nce of thermodynamic properties of a system.