Measures ph, mv and temperature 5 point calibration 16 x 2 line alphanumeric lcd with backlit auto buffer recognition facility storage up to 999 samples attachment for centronics dot matrix printer microprocessor based ph meter is a solid state instrument designed to provide the precise ph and mv measurements. The instrument uses the latest microprocessor technology and advanced engineering techniques so as to give enhanced accuracy and reproducibility. The system has user friendly prompts which guide you through out the measurement process.