The Bluelab EC Pen is a professional‑grade digital nutrient meter engineered to measure the electrical conductivity (EC), parts per million (PPM), and temperature of your nutrient solution with exceptional accuracy. Maintaining the correct nutrient strength is essential for preventing overfeeding, underfeeding, nutrient lockout, and slow plant growth — and the Bluelab EC Pen gives growers the confidence to feed correctly every time.

Designed for hydroponics, coco, DWC, RDWC, NFT, and run‑to‑waste systems, this pen features a fully waterproof body, automatic temperature compensation, and a clear digital display for quick, reliable readings. Its compact, durable design makes it ideal for daily use in grow rooms, greenhouses, and nutrient‑mixing areas.

Whether you're a beginner or a commercial grower, the Bluelab EC Pen provides the precision and reliability needed to optimise nutrient uptake and maximise plant performance.

Key Features & Benefits

Accurate EC/PPM Measurement

Ensures your nutrient solution is mixed correctly for every stage of plant growth.

Automatic Temperature Compensation (ATC)

Delivers accurate readings even when water temperature fluctuates.

Fully Waterproof & Durable

Engineered for long‑term use in demanding hydroponic environments.

Long Battery Life

Energy‑efficient design for extended operation between battery changes.

 Fast, Reliable Readings

Instant EC and temperature measurements for quick decision‑making.

Easy to Use & Maintain

Simple calibration and a user‑friendly interface make it suitable for all experience levels.

Ideal for All Hydroponic Systems

Perfect for DWC, RDWC, NFT, aeroponics, coco, and soil‑less growing.