A titration unit with a reagent recirculation system for manual titration directly from the reagent bottle. Power supplied by a solar cell. Main features: Media recirculating system for simple and rapid venting without reagent loss Easily replaceable valves Handwheels with soft touch surface Clearly legible display, regardless of the viewing angle A light protection window for the valve block is also included in the scope of delivery Individual calibration of user-specified adaptations with 'Quick-Cal' Serial bidirectional interface (RS232 and USB) Provided with 3 adaptors (GL32, GL38 and S40) suction hose, return tube, key, manual and certificate.