Waterproof Portable pH/mV Meter with 0.01 Resolution- HI9125

SKU: HI9125

Ships within 1-2 Business Days

The HI9125 is a rugged, portable pH and mV meter providing laboratory precision and accuracy in harsh environmental or industrial conditions. This meter can use an optional ORP (oxidation reduction potential) electrodes to display results in the mV range. The HI9125 is supplied with meter, PEI plastic body, double junction pH electrode, and temperature probe packaged in a durable plastic carrying case.

  • Automatic Two-Point Calibration
  • Automatic Temperature Compensation
  • Waterproof to IP67 Standards
  • Universal BNC Connector



Automatic one or two-point calibration using standard buffers (pH 4.01, 6.86, 7.01, 9.18, and 10.01)

Supplied with the HI1230B gel-filled, PEI-plastic body, double-junction pH electrode

RCA connector is used for a thermistor temperature probe that has ±0.4°C accuracy measurement for precise temperature compensation

Automatic or manual temperature compensation of pH measurements over a wide range from -20.0 to 120.0°C

Readings can be stored using the MEM button and recalled with the MR button

Battery Error Prevention System (BEPS) detects when the batteries are too weak for reliable measurements

Can be used with a wide variety of ORP electrodes for monitoring oxidation reduction potentials

mV measurements automatically change from 0.1 to 1 mV resolution when the reading reaches 700 mV

More Information
SKU HI9125
Product Name Waterproof Portable pH/mV Meter with 0.01 Resolution- HI9125
Quote Required No
pH Range -2.00 to 16.00 pH
pH Resolution 0.01 pH
pH Accuracy ±0.01 pH
pH Calibration automatic, one or two-point with five memorized buffer values (pH 4.01, 6.86, 7.01, 9.18, 10.01)
pH Input impedence 10¹² Ohms
mV Range ±699.9 mV; ±1999 mV
mV Resolution 0.1 mV; 1 mV
mV Accuracy ±0.2 mV; ±1 mV
Temperature Range -20.0 to 120.0 ºC, -4.0 to 248.0 °F
Temperature Resolution 0.1 °C, 0.1 °F
Temperature Accuracy ±0.4°C; ±0.8°F
Temperature Compensation manual or automatic from -20.0 to 120.0°C (-4.0 to 248.0°F)
pH Electrode HI1230B PEI body pH electrode with BNC connector and 1 m (3.3’) cable (included)
Temperature Probe HI7662 stainless steel temperature probe with 1 m (3.3’) cable (included)
Automatic Shut-Off after 20 minutes of non-use (can be disabled)
Battery Type/Life 1.5V (3) AAA / approximately 200 hours of continuous use
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.)
Ordering Information HI9125 is supplied with HI1230B pH electrode, HI7662 temperature probe, HI70004 pH 4.01 buffer solution sachet (20 mL), HI70007 pH 7.01 buffer sachet (20 mL), 100 mL plastic beaker, 1.5V AAA batteries (3), instructions, and hard carrying case.
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