The multicommutation approach can be defined as a branch
of the flow analysis technique, where the core of the flow system
manifold is constituted by assembling a set of three-way solenoid
valves, each one organized to work as an independent commutation
unit, thus affording facilities to handle two or more chemical
solutions using a single pumping channel [16,17]. Under software
control, the working condition of the flow module can be
modified without its reconfiguration. By exploiting these facilities
automatic procedures to carry out on line sample dilution
[18,19], true titration [20,21] and solvent extraction [22,23] were
implemented.