PHMETRO BENCH; AMBIENT TEMPERATURE -25 …. +65 DEGREES C; OPERATING TEMPERATURE 0 …. +55 DEGREES C; MEASUREMENT RANGE AND RESOLUTION PH -2000 …. + 19.999 / -2.00 … – 19.99; U [MV] – 999.9 … + 999.9 / -1999 … + 1999; T [DEGREE C] -5.0 … + 105.0; ACCURACY (+- 1 DIGIT) PH (WITH MEASUREMENT RANGE OF 2 PH UNITS AROUND THE CALIBRATION POINT) +- 0.005 (OPERATING TEMPERATURE) / +15. … + 35 CRANES C / +- 0.01; U [MV] 0.3 (OPERATING TEMPERATURE + 15 …. + 35 DEGREES C) / +- 0.01 ; T [DEGREES C ] NTC 30: +-0.1 / PT 1000: +- 0.5 TO 0 …. 15 CRANES C / +- 0.1 TO 15…. 35°C / +- 1 TO 35 …. 55 DEGREES C; LENGTH 230 MM; WIDTH 210 MM; HEIGHT 70 MM; WTW – INOLAB PH 720