HANNA HI9125 Portable pH/ORP Meter

Range
+ pH: -2.00 to 16.00 pH
+ ORP: ±699.9 mV; ±1999 mV
+ Temperature: -20.0 to 120.0°C / -4.0°F to 248.0°F
Resolution
+ pH: 0.01 pH
+ ORP: 0.1 mV; 1 mV
+ Temperature: 0.1°C / 0.1 °F
Accuracy @ 20°C
+ pH: ±0.01 pH
+ ORP: ±0.2 mV; ±1 mV
+ Temperature: ±0.4°C/±0.8°F (excluding probe error)
Calibration
+ pH: automatic, one or two point with five standard buffer values (pH 4.01, 6.86, 7.01, 9.18, 10.01)
+ Offset: ±1 pH
+ Slope: from 80 to 108%
Temperature
Compensation: automatic or manual, -20.0 to 120.0°C / -4.0 to 248.0°F without temperature probe
Electrode: HI 1230B PEI body pH electrode with BNC connector and 1 m cable (included)
Temperature
Probe: HI 7662 stainless steel temperature probe with 1 m cable (included)
Input Impedance: 10^12 Ohm
Battery Type / Life: 1.5V AAA (3) / approximately 200 hours of continuous use. Auto-off after 20 minutes of non-use (can be disabled)
Environment: 0 to 50°C (32 to 122°F); RH max 100%
Dimensions: 185 x 72 x 36 mm (7.3 x 2.8 x 1.4’’)
Weight: 300 g (10.6 oz.)