Consider a charged, perfect quantum gas, in the effective mass approximation, and in the grand-canonical ensemble. We prove in this paper that the generalized magnetic susceptibilities admit the thermodynamic limit for all admissible fugacities, unif
ormly on compacts included in the analyticity domain of the grand-canonical pressure. The problem and the proof strategy were outlined in cite{3}. In cite{4} we proved in detail the pointwise thermodynamic limit near $z=0$. The present paper is the last one of this series, and contains the proof of the uniform bounds on compacts needed in order to apply Vitalis Convergence Theorem.
