TRIPLETT WQ120 pH TDS Conductivity Salinity and Temperature Pen
The TRIPLETT WQ120 combines pH, conductivity, total dissolved solids, salinity and temperature measurements in a portable pen. A flat pH electrode and multi-range conductivity cell let the user compare several properties in the same sample while keeping the meaning of each result distinct.
Key Features
- Automatic temperature compensation and dual display with trend bar graph.
- Adjustable TDS conversion ratio for the solution being tested.
- Multi-point calibration and 25-reading memory.
- Replaceable sensor module, electrode-care indication and IP 57 enclosure.
Technical Specifications
| pH | 0–14 pH / 0.01 pH / ±0.01 pH |
| Conductivity ranges | 0–200 / 200–2000 µS; 2–20 mS |
| TDS ranges | 0–100 / 100–1000 ppm; 1–10 ppt |
| Salinity ranges | 0–100 / 100–1000 ppm; 1–10 ppt |
| Conductivity TDS and salinity accuracy | ±2% FS |
| Temperature | 0–90 °C / ±1 °C |
| TDS ratio | 0.40–1.00 |
| Power and memory | 4 × CR2032; 25 readings |
Package Contents
Pen and electrode module with protective cap, four CR2032 batteries, sample cup with cap and neck strap. Use calibration solutions appropriate for the test method.
Suitable Applications
Check and compare water and solution properties in laboratory or field work. Interpret TDS using the chosen conversion ratio and solution composition; a meter reading alone is not a complete assessment of drinking-water suitability.
Important Before Purchase
WQ120 measures pH, conductivity, TDS, salinity and temperature. Select the appropriate units and conversion ratio for the sample, then follow calibration and sensor-care procedures. Use the recommended electrode storage solution and keep the pH sensor from drying out.
Frequently Asked Questions
Is TDS the same as conductivity? No. They use different units; TDS depends on the selected conversion ratio.
Is a replacement module available? The manufacturer lists WQ125 for this model.
Recommended Products
- TRIPLETT PH180 pH and Temperature Meter — For separate pH and sample temperature measurements when comparing or extending water checks.
- TRIPLETT TMP10 Pocket Probe Thermometer — For independent contact temperature checks within its probe limits; it is not a plug in probe for the other instrument.
- WADFOW WTM1503 Temperature and Humidity Meter — For separate ambient temperature and humidity checks alongside the inspection readings.
- WISEUP 16 Inch Tool Bag — To organize small inspection tools during transport; check internal dimensions before packing the instrument and accessories.
- JADEVER Infrared Surface Thermometer — For non contact equipment surface temperature comparisons; it measures a surface, not internal sample temperature.