Bluelab® Conductivity Pen is a professional handheld EC/TDS/temperature meter that measures the total nutrient strength of your irrigation solution. While pH tells you whether nutrients are available, conductivity (EC) tells you how much nutrient is dissolved — equally critical for avoiding both underfeeding (low growth) and overfeeding (salt damage, root burn).
Key Features
- Triple Measurement — EC (mS/cm), TDS (ppm), and Temperature in one device
- No Calibration Required — Factory-calibrated with no field recalibration needed
- Auto Temperature Compensation — Accurate readings regardless of solution temperature
- Fully Waterproof — Rated for submersion — drop-proof in nutrient tanks
- Backlit Display — Clear readings in any greenhouse lighting condition
- Instant Results — Readings stabilize in under 5 seconds
Technical Specifications
| Measurements | EC: 0–10.0 mS/cm | CF: 0–100 | TDS: 0–5000 ppm | Temp: 0–50°C |
| Accuracy | EC: ±2% | Temp: ±0.5°C |
| Calibration | Not required (factory-set) |
| Waterproof | Yes — fully submersible |
| Battery | Replaceable AAA |
| Display | Backlit LCD |
