Hanna Combo 3-in-1 – HI98129

Hanna HI98129 Combo 3-in-1 pH, EC & TDS Tester

Check pH, electrical conductivity (EC) and total dissolved solids (TDS) with one compact pocket tester. The Hanna HI98129 is the low-range Combo model and also measures temperature, making it a practical choice for routine solution testing in laboratories and educational settings.

Key features

• Three core measurements in one instrument: pH, conductivity and TDS, plus temperature.
• Waterproof, floating design for convenient handheld testing.
• Easy-to-read LCD display.
• Automatic temperature compensation for pH, EC and TDS readings.
• Replaceable HI73127 pH electrode.
• Automatic one- or two-point pH calibration.
• Selectable EC-to-TDS conversion factor from 0.45 to 1.00.
• Automatic shut-off after eight minutes of inactivity.

Technical specifications

• Model: HI98129
• Brand: Hanna - USA
• pH range: 0.00–14.00 pH
• pH resolution: 0.01 pH
• pH accuracy at 25°C: ±0.05 pH
• Conductivity range: 0–3999 µS/cm
• Conductivity resolution: 1 µS/cm
• TDS range: 0–2000 ppm (mg/L)
• TDS resolution: 1 ppm (mg/L)
• EC and TDS accuracy: ±2% of full scale
• Temperature range: -5.0–60.0°C
• Temperature resolution: 0.1°C
• Temperature accuracy: ±0.5°C
• Power: four 1.5 V batteries; approximately 100 hours of continuous use
• Instrument dimensions: 163 × 40 × 26 mm

Model selection: HI98129 is the low-range model. Choose a meter with a suitable higher range when testing solutions above 3999 µS/cm or 2000 ppm.