A titration unit with a reagent recirculation system for manual titration directly from the reagent bottle. Power supplied by a solar cell.rrMain features:rMedia recirculating system for simple and rapid venting without reagent lossrEasily replaceable valvesrHandwheels with soft touch surfacerClearly legible display, regardless of the viewing anglerA light protection window for the valve block is also included in the scope of deliveryrIndividual calibration of user-specified adaptations with 'Quick-Cal'rSerial bidirectional interface (RS232 and USB)rProvided with 3 adaptors (GL32, GL38 and S40) suction hose, return tube, key, manual and certificate.