Combo Tester

Choose HI 98129 or HI 98130 according to the proper EC/TDS ranges for your application
HI 98129; EC – 0 to 3999 µS/cm; TDS – 0 to 2000 ppm
HI 98130; EC – 0.00 to 20.00 mS/cm; TDS – 0.00 to 10.00 ppt

Temperature in °C and °F
Rugged, Floating Waterproof Casing
Replaceable pH Electrode Featuring an Extendable Junction

The HI 98130 Combo waterproof tester offers high accuracy pH, EC/TDS and temperature measurements in a single tester! No more switching between meters for your routine measurements. The waterproof Combo (it even floats) has a large easy-to- read, dual-level LCD and automatic shut off. pH and EC/TDS readings are automatically compensated for the effects of temperature (ATC).

This technologically advanced tester has a replaceable pH electrode cartridge with an extendable cloth junction as well as an EC/TDS graphite electrode that resists contamination by salts and other substances. This gives the meter a greatly extended life. Your tester no longer needs to be thrown away when the pH sensor is exhausted.

The EC/TDS conversion factor is user selectable as well as the temperature compensation coefficient (ß). Fast, efficient, accurate and portable, the Combo pH, EC/TDS and temperature tester brings you all the features you’ve asked for and more

HI 98129 is supplied complete with protective cap, electrode removal tool, batteries and instructions.


Range : 0 to 3999 µS/cm EC, 0 to 2000 ppm TDS, 0.00 to 14.00 pH, 0.0 to 60.0 °C or 32.0 to 140.0 °F

Resolution : 1 µS/cm EC, 1 ppm TDS, 0.01 pH, 0.1 °C or 0.1 °F

Accuracy : (@20°C/68°F) ±2% F.S. EC/TDS, ±0.05 pH, ±0.5 °C or ±1 °F

Typical EMC Deviation : ±2% F.S. EC/TDS, ±0.02 pH, ±1 °C or ±1 °F

Calibration : Automatic at 1 point EC/TDS, 1 or 2 points with 2 sets of memorized buffers pHTemp.

Compensation : BETA (ß) = adjustable from 0.0 to 2.4 per °C in increments of 0.1 EC/TDS, Automatic for pH

EC/TDS Conversion Factor : Adjustable from 0.45 to 1.00

Environment : 0 to 50°C (32 to 122°F); R.H. 100%

Battery Type/Life : 4 x 1.5V / 100 hours

Dimensions : 163 x 40 x 26 mm (6.4 x 1.6 x 1.0″)