Bench-top Digital pH Meter, Model 3510, pH/mV/temp Meter with combination electrode & ATC probe. With Automatic Temperature Compensation and Automatic Buffer Recognition and 32 reading memory. With three points calibration and RS232 Serial printer interface. Range: pH -2 to +19.999; mV -1999 to +1999; Temp. -10 to +105C. Resolution: pH 0.001. mV 0.1, °C ±0.1, Jenway – United Kingdom