Conductivity units
| Unit | Value |
|---|
Resistivity units
| Unit | Value |
|---|
TDS estimate (μS/cm × factor)
Typical water conductivity (25 °C)
Common reference ranges for industrial water treatment and environmental monitoring. Uncompensated readings drift with temperature; 25 °C is the usual reference.
| Water type | Conductivity (μS/cm) | Resistivity (MΩ·cm) | Typical application |
|---|
Why it matters: conductivity and resistivity are reciprocal (1 μS/cm = 1 MΩ·cm ÷ 10⁶).
Temperature compensation: compare readings compensated to 25 °C; the coefficient for neutral water is about 2 %/°C.
TDS: μS/cm × 0.5–0.7 ≈ mg/L (NaCl basis), estimate only.
Temperature compensation: compare readings compensated to 25 °C; the coefficient for neutral water is about 2 %/°C.
TDS: μS/cm × 0.5–0.7 ≈ mg/L (NaCl basis), estimate only.