Bluelab Original Truncheon Meter

It is essential when growing with a hydroponic solution to KNOW what the strength of the solution is before feeding your plants AND while they are growing.This is easy if you use the Bluelab Truncheon® Nutrient Meter! To take a reading of your solution, simply place the probe head into the solution for 1-2 minutes to reach the same temperature of your nutrient. The reading is indicated by the flashing lights. Calibration of the Meter is not required.Meter length: 40.7 cm (16 1/32 in).Features• Fully waterproof• Auto on/off function• Daylight readable blue LEDs• Battery operated• No buttons, switches or knobs• Provided with EC, CF, ppm 700 and ppm 500 scales