Hanna Instruments Australia
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Sales: (03) 9769 0666   |    Mon to Fri: 8:30am – 5:00pm
Hanna Instruments Australia
Sales: (03) 9769 0666   |    Mon to Fri: 8:30am – 5:00pm

Combo pH/Conductivity/TDS Tester (Low Range) - HI98129

$371.26

The HI98129 makes measuring pH quick and easy! This lightweight, waterproof tester offers high accuracy pH, low range EC/TDS (0 to 3999 µS/cm EC/ 0 to 2000 ppm TDS) and temperature measurements in a single handheld unit! No more switching between meters for your routine measurements.

  • Waterproof
  • Replaceable pH electrode with extractable junction
  • Automatic calibration

The HI98129 is a highly accurate, waterproof pH meter that can also measure EC/TDS in the low range (0 to 3999 µS/cm EC/ 0 to 2000 ppm TDS) and temperature. This floating, waterproof combination tester has an easy to read, LCD and an automatic shut-off. In addition, pH and EC/TDS readings are automatically temperature compensated (ATC) to prevent temperature-related variations in your measurements. For EC/TDS readings, the EC/TDS conversion factor (CONV) is selectable by the user, as well as the temperature compensation coefficient β (BETA).

Replaceable pH Electrode Cartridge

The HI98129 tester features an easy to replace pH electrode cartridge with an extendable cloth junction. The extendable cloth junction helps increase electrode life and the replaceable pH cartridge means that this tester does not need to be thrown away when the pH sensor is exhausted. Also, the sturdy, snap-in connector means there are no pins to bend or break!

High Accuracy EC/TDS Graphite Probe

The graphite conductivity probe provides greater accuracy because it cannot be contaminated by salt deposits in the solution. The exposed temperature sensor provides fast response times and guarantees highly accurate temperature compensated readings.

Features at-a-glance

  • 3 sensors in a single meter

pH electrode with extractable junction

Amperometric EC/TDS sensor

Exposed temperature probe for faster EC/TDS readings

  • Waterproof

Designed to float if accidently dropped in sample

  • Wide pH Range

pH range is from 0.00 to 14.00 pH

  • Selectable EC to TDS conversion factor

Choice of either a 0.45 or 1.0 conversion factor

  • Automatic Temperature Compensation

All readings are compensated for variations in temperature

Temperature displayed in ℃ or ℉ along with pH, EC or TDS reading

  • Stability indicator

Meter displays a clock tag that will disappear when the reading has achieved stability

  • HOLD button

Freezes reading on the display to allow recording of measurement

  • BEPS (Battery Error Prevention System

Meter will automatically shut off if there is not enough power to get an accurate measurement

  • Battery % level at startup
  • Low Battery Indicator

When the level is below 5%, the battery symbol on the LCD blinks to indicate a low battery condition.

  • Auto-off

Auto-off feature automatically shuts off meter after 8 minutes of non-use to maximize battery life

SKU HI98129
Name Combo pH/Conductivity/TDS Tester (Low Range) – HI98129
pH Range 0.00 to 14.00 pH
pH Resolution 0.01 pH
pH Accuracy ±0.05 pH
pH Calibration automatic, at one or two points with two sets of standard buffers (pH 4.01 / 7.01 / 10.01 or pH 4.01 / 6.86 / 9.18)
pH Temperature Compensation automatic
EC Range 0 to 3999 µS/cm
EC Resolution 1 µS/cm
EC Accuracy ±2% F.S.
EC Calibration automatic, one-point at: 1413 µS/cm
TDS Range 0 to 2000 ppm (mg/L)
TDS Resolution 1 ppm (mg/L)
TDS Accuracy ±2% F.S.
TDS Calibration automatic, one-point at: 1382 ppm (mg/L)
EC/TDS Temperature Compensation automatic with β adjustable from 0.0 to 2.4% / °C
EC to TDS Conversion Factor 0.45 to 1.00
Temperature Range 0.0 to 60.0°C / 32.0 to 140.0°F
Temperature Resolution 0.1°C / 0.1°F
Temperature Accuracy ±0.5°C /±1°F
pH Electrode HI73127 (replaceable; included)
Battery Type/Life 1.5V (4) / approx. 100 hours of continuous use, auto-off after 8 minutes of non-use
Environment 0 to 50°C (32 to 122°F); RH max 100%
Dimensions 163 x 40 x 26 mm (6.4 x 1.6 x 1.0”)
Weight 100 g (3.5 oz.)

HI98129 is supplied with HI73127 pH electrode and HI73128 electrode removal tool, batteries (4 x 1.5V) and instructions.

Combo pH/Conductivity/TDS Tester (Low Range) – HI98129

All prices are inclusive of GST and not all items are stock items, if you require an immediate solution please send an email to sales@hannainst.com.au or call us on (03) 9769 0666.


Free standard delivery:

We offer free delivery within Australia, typically arriving within 5 to 7 days. Delivery times may vary depending on the courier service and the recipient’s location.


Same-day express delivery:

Place your order before 1 PM Monday to Friday for the same-day express shipping. Delivery times may vary depending on the courier service and the recipient’s location.

Please note that we do not offer shipping to PO Box addresses.

All prices are inclusive of GST and not all items are stock items, if you require an immediate solution please send an email to sales@hannainst.com.au or call us on (03) 9769 0666.

Please note that we do not offer shipping to PO Box addresses.