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Customer Support: (800) 842-6629

Portable pH/mV Meter - HI8424


In stock

The HI8424 General Purpose pH/mV Meter is a highly accurate compact, waterproof, portable meter with a separate temperature probe for temperature compensated pH measurement.This meter has a BNC connection and can be used with many BNC style pH and ORP electrodes.

  • Compact waterproof design
  • Automatic Temperature Compensation (ATC)
  • Automatic one or two-point calibration



Waterproof, heavy duty casing protects against water that would damage the electronics

Automatic calibration to one or two points to standard buffer values (pH 4.01, 7.01, and 10.01)

Automatic shutoff after 20 minutes to conserve battery life.

Low battery indicator is displayed when the battery life is at 5%

High resolution/accuracy mV range, switching resolution automatically from 1 mV to 0.1 mV when ORP readings are between -699.9 to +699.9 mV. The accuracy within this range is ±0.2 mV.

Comes complete with a protective carrying case, PEI plastic body pH electrode, stainless steel temperature probe, calibration buffer sachets, and cleaning solution sachets

Additional information

Weight 0.79 kg


pH Accuracy

±0.01 pH

pH Calibration

10.01), 7.01, at one or two points with three standard buffers (4.01, automatic

pH Range

-2.00 to 16.00 pH

pH Resolution

0.01 pH

Temperature Accuracy

±0.4°C; ±0.8°F

Temperature Range

-20.0 to 120.0°C / -4.0 to 248.0°F


SKU HI8424
Name Portable pH/mV Meter – HI8424
pH Range -2.00 to 16.00 pH
pH Resolution 0.01 pH
pH Accuracy ±0.01 pH
pH Calibration automatic, at one or two points with three standard buffers (4.01, 7.01,10.01)
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°C / -4.0 to 248.0°F
Temperature Resolution 0.1°C / 0.1°F
Temperature Accuracy ±0.4°C; ±0.8°F
Temperature Compensation automatic from -20.0 to 120.0ºC (-4.0 to 248.0ºF) or manual without temperature probe connected
pH Electrode HI1230B PEI body pH probe 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 9V / approximately 150 hours of continuous use
Environment 0 to 50°C (32 to 122°F); RH max 100%
Dimensions 164 x 76 x 45 mm (6.5 x 3.0 x 1.8 in.)
Weight 180 g (6.3oz.)

Ordering Info

HI8424 is supplied with HI1230B pH electrode, HI7662 temperature probe, HI70004 pH 4.01 buffer solution sachet, HI70007 pH 7.01 buffer solution sachet, HI700601 electrode cleaning solution sachets (2), battery, protective case and instructions.


Portable pH/mV Meter – HI8424