Low Range pH/Conductivity/TDS Tester - HI98129
Low Range pH/Conductivity/TDS Tester - HI98129 pH Meter HANNA INSTRUMENTS Selangor, Kuala Lumpur (KL), Shah Alam, Malaysia Lab Instruments, Chemistry Laboratory Equipment, Lab Equipment  | ENVIROLAB SDN. BHD.


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

3 sensors in a single tester
pH electrode with extractable junction
Amperometric EC/TDS sensor
Exposed temperature probe for faster EC and TDS (ppm) readings

Designed to float if accidentally dropped in sample

Wide pH Range
pH range is from 0.00 to 14.00 pH

Selectable EC to TDS (ppm) 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 oC or oF along with pH, EC or TDS reading


Specification Name Detail
SKU HI98129
pH Ranges 0.00 to 14.00 pH
pH Resolution 0.01 pH
pH Accuracy (@25°C/77°F) ±0.05 pH
pH Calibration automatic, one or two-point with two sets of standard buffers (pH 4.01 / 7.01 / 10.01 or 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.
TDS Range 0 to 2000 mg/L (ppm)
TDS Resolution 1 mg/L (ppm)
TDS Accuracy ±2% F.S.
TDS Calibration automatic, one point at 1413 μS/cm or 1382 mg/L (ppm)
Temperature Correction Coefficient automatic with adjustable from 0.0 to 2.4% / °C
EC to TDS Conversion Factor 0.45 to 1.00
Temperature Range -5.0 to 60.0°C / 23.0 to 140.0°F
Temperature Resolution 0.1°C / 0.1°F
Temperature Accuracy ±0.5°C /±1°F
pH Electrode HI73127 (replaceable; included)
Automatic Shut-Off auto-off after 8 minutes of non-use
Battery Type / Life 1.5V (4) / approx. 100 hours of continuous 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.)
Ordering Information Each HI98129 is delivered in a cardboard box and is supplied with:
HI70004 pH 4.01 buffer solution, 20 mL sachet (1 pc.),
HI70007 pH 7.01 buffer solution, 20 mL sachet (1 pc.),
HI70300N Storage solution for pH & ORP electrodes, 20 mL sachet (1 pc.),
HI70031 1413 μS/cm conductivity standard, 20 mL sachet (1 pc.),
HI70032 1382 ppm TDS standard, 20 mL sachet (1 pc.),
HI700601 pH & ORP electrode cleaning solution, 20 mL sachet (1 pc.),
HI73127 pH electrode,
HI73128 Electrode removal tool, 1.5V batteries (4 pcs.), Instrument quality certificate, & Instruction manual.
Warranty 1 year

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