A meter to measure the strength of your nutrient solution is one of those really necessary items for enthusiastic hydroponics growers. Bluelab's EC Pen features the same robust build quality, accuracy and reliability that make Bluelab testing equipment the default choice for growers across the world.
- Measures conductivity and temperature
- Selectable units for conductivity and temperature
- Backlit LCD display
- Calibration optional
- Low battery indicator
- Fully waterproof
- 1 x AAA alkaline battery included