Hanna Instruments

Scientific Equipment

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HI-9125 Handheld pH/mV Meter with Enhanced Design

HI-9125 Handheld pH/mV Meter with Enhanced Design

Hanna HI-9125 Handheld pH/mV Meter with Enhanced Design

HI-9125 Handheld pH/mV Meter with Enhanced Design

Complete with pH electrode
2 year manufacturer warranty
In Stock
£488.65 (exc. VAT) £586.38 (inc. VAT)

Heavy-duty water resistant casing combined with latest microprocessor technology makes this meter ideal for delivering laboratory grade results and accuracy under harsh industrial conditions.

HI-9125 Handheld pH/mV Meter with Enhanced Design information

Hanna's extended description

The HI-9125 is a rugged, high specification portable meter that offers the additional advantage of being able to measure ORP.

Key features
  • Heavy-duty waterproof casing
  • Large clear LCD display
  • Extended pH and temperature given simultaneously
  • Memorises pH reading and recall
  • Battery % remaining on start up
  • User-friendly text and graphics support calibration procedure without constant reference to a manual
  • Automatic temperature compensation
  • Rubberised keyboard
  • Fully automatic buffer recognition
  • Automatic pH calibration with five memorised pH buffer values and buffer recognition to simplify calibration
  • User-selectable calibration time-out
  • Battery error prevention system (BEPS)
  • HI-7662 stainless steel temperature sensor included as standard
  • HI-1230B double junction pH electrode minimises junction contamination and enhances accuracy (supplied as standard)

Supplied with
  • HI-1230B pH electrode
  • HI-7662 temperature probe
  • Starter pack of buffer solutions
  • 100 ml plastic beaker
  • Batteries and instructions

Water Resistant – Can withstand temporary exposure to water, but should not be submerged or washed under running water.

Replaceable Electrode – No need to replace the whole meter when the electrode needs replacing. Spare and replacement electrodes are available for this product.


Specifications list


Range - pH -2.00 to 16.00 pH
Range - mV ±699.9 mV; ±1999 mV
Range - Temperature 20.0 to 120.0°C / -4.0°F to 248.0°F
Resolution - pH 0.01 pH
Resolution - mV 0.1 mV; 1 mV
Resolution - Temperature 0.1 °C / 0.1 °F
Accuracy - pH ±0.01 pH
Accuracy - mV ±0.2 mV; ±1 mV
Accuracy - Temperature ±0.4 °C / ±0.8 °F
pH Calibration automatic 1 or 2 point with 5 memorised buffer values (4.01, 6.86, 7.01, 9.18, 10.01)
Offset Calibration ±1 pH
Slope Calibration From 80 to 108%
Temperature Compensation automatic or manual, -20 to 120°C (-4 to 248°F)
pH Electrode HI 1230B, double junction, gel filled, BNC connector and 1 m (3.3’) cable (included)
Temperature Probe HI 7662 with 1 m (3.3’) cable (included)
Input Impedance 1012 Ohm
Battery Type / Life (4) 1.2V AAA rechargeable / approx 200 hours of continuous use (with backlight off); auto-off after 20 minutes of non-use (can be disabled)
Environment 0 to 50°C (32 to 122°F); RH max 100%
Dimensions 192 x 71.6 x 36 mm (7.5 x 2.8 x 1.4’’)
Weight 525 g (18.5 oz.)
Very happy!

A high-quality instrument. - by Muyunda Lifumbela

I really enjoyed my shopping experience

Working perfectly. - by Muyunda Lifumbela

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