Description
Accurate readings start with accurate calibration
Your sensors are only as reliable as their last calibration. Over time, every pH, conductivity, and redox electrode drifts. GHL Sensor Calibration Fluids give you a precisely defined reference so your ProfiLux keeps measuring what’s really in your aquarium — not what the electrode thinks it sees.
Each fluid is a stabilized, laboratory-grade reference solution with a clearly defined value. Regular calibration keeps your dosing, KH, salinity, and water-quality control dependable.
Which fluid do I need?
| Fluid | Calibrates | Typical use |
|---|---|---|
| pH 4 / pH 7 / pH 9.2 | pH electrode | Two-point pH calibration (7 + 4 or 7 + 9.2) |
| Conductivity 1.41 mS/cm | Conductivity sensor | Low-range / freshwater |
| Conductivity 50 mS/cm | Conductivity / salinity sensor | Seawater range |
| Redox 220 mV | Redox electrode | Single-point redox reference |
Why GHL calibration fluids
- Stabilized formulation with a long, reliable shelf life
- Precisely defined reference values for repeatable results
- Matched to GHL sensors and the ProfiLux calibration routine
- Made in Germany
Tip: Use fresh fluid for each calibration and don’t pour used fluid back into the bottle — this avoids contamination and keeps your
