The Bluelab Truncheon measures the electrical conductivity of your nutrient solution via electrodes on the bottom end, and then displays the measurement on a row of LED's calibrated in all the popular scales (CF, EC and PPM). The electrodes are very high quality and will last a long time and are protected by a slotted plastic shroud. The Bluelab truncheon is known and used all over; 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. Fully waterproof Auto on/off function No calibration required Daylight readable blue LEDs Battery operated Simple to use - no buttons, switches or knobs Provided with EC, CF, ppm 700 and ppm 500 scales 5-year Bluelab Warranty 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! This is easy if you use the Bluelab Truncheon! 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. Remove from the solution and place back in to take the reading as indicated by the flashing lights. Rinse the probe after use in fresh water and clean once a week to ensure the Truncheon Nutrient Meter remains accurate.
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