HANNA HI991002 Portable Extended Range pH/ORP Meter

Range
+ pH: -2.00 to 16.00 pH
+ ORP: ±1999 mV
+ Temperature: -5.0 to 105.0°C; 23.0 to 221.0°F
Resolution
+ pH: 0.01 pH
+ ORP: 1 mV
+ Temperature: 0.1°C/0.1°F
Accuracy@ 20°C
+ pH: ±0.02 pH
+ ORP: ±2 mV
+ Temperature: ±0.5°C up to 60°C; ±1.0°C (outside); ±1.0°F up to 140°F; ±2.0°F (outside)
pH Calibration: automatic one or two point calibration with two sets of memorized buffers (standard 4.01, 7.01, 10.01 or NIST 4.01, 6.86, 9.18)
Temperature Compensation: automatic, -5.0 to 105.0°C (23.0 to 221.0°F)
Electrode: HI 1297D pre-amplified pH/ORP probe with internal temperature sensor, DIN connector and 1 m cable (included)
Battery
Type/Life: 1.5V (3) AAA / approximately 1200 hours of continuous use. auto-off after eight minutes of non-use
Environment: 0 to 50°C (32 to 122°F); RH max. 100%
Dimensions: 152 x 58 x 30 mm (6.0 x 2.3 x 1.2”)
Weight: 205 g (7.2 oz.)