Integrated solar panels supply the energy for the electronic components and the display. No more charging or changing batteries. Easily readable, large LC display. Serial, bi-directional interface. No loss of reagent due to the user-friendly reagent recirculation system. Stable discharge tube, always correctly positioned. All valves are easily exchangeable. Hand wheels with a soft-touch surface. Luer-Lock connection for filter, dry tube etc. Device rotates freely. Quick-Cal individual calibration. Permanent storage of default calibration. Individual quality certificates, conformity certified. Perfect ergonomics for efficient and non-tiring work. Teflon piston and DURAN glass cylinder make the unit steam sterilizable (121°C). Unit will fit on containers with thread sizes 32, 38, 40 and 45.