BlueLab Truncheon Meter. The world’s favourite nutrient meter! With its super tough, high quality, fully waterproof design, no calibration required, daylight readable blue LED’s and no on/off buttons to worry about, the Bluelab Truncheon® Nutrient Meter has proven itself as the world’s favourite nutrient meter.
Calibration of the Meter is not required and it’s great for stirring your nutrient tank too!
- EC (0.2 – 3.6), CF (2 – 36) and ppm scales (TDS and 700 scale)
- Fully waterproof
- No calibration required
- Auto sense on and off
- No external switches or adjustable buttons
- Battery life minimum 1 year (or shelf life of battery)