This work outlines the pH neutralization process as a benchmark for nonlinear control design. The typical industrial conditions for this class of process are analyzed in order to elaborate a proposal for laboratory equipment that closely resembles a real system and also furnishes an excellent test bench for verifying new control strategies. This equipment has been installed at National University of San Juan, Argentina. The control problem, namely, the benchmark, with all of its operating restrictions is presented for real applications. The benchmark representation capability is discussed. The final goal is to define a pH region where the model has a good representation capability for industrial acid mixtures. Several experiments conducted at the laboratory assembly demonstrate the effectiveness of the proposed benchmark. Finally, a PID controller is presented as a reference for comparing the performance of tested nonlinear controllers.