The Bluelab EC Pen is a compact, quick and handy tool for measuring conductivity and temperature. It simply lets you know whether your plants have the right amount of nutrient in your solution and tells you if adjustments are required.
 
Team up the Bluelab EC Pen with Bluelab pH Pen for a handy, convenient and accurate system for ensuring optimum plant growth and health. Display options available in °C, °F, EC, CF, ppm 500 and ppm 700.
 
Other Features include:-
 
Backlit LCD display
Calibration optional
Successful calibration indicator
Hold function
Low battery warning
Auto off function
Automatic temperature compensation
Waterproof