KL-2385 Nutrient Truncheon - EC/ppm/CF Meter The KELILONG stick measures the nutrient strength of a solution. It is essential when growing hydroponics to know what the strength of the solution is before feeding your plants and while they are growing. The KELILONG stick is the perfect all-around conductivity meter. Its rugged chassis and precision components make it super accurate every time you use it. This incredibly accurate meter is fully waterproof and simple to use. Just dip the probe end into the nutrient and the unit turns on and off automatically. The reading is instantly displayed on an intuitive and easy to read scale of waterproof LED lights. Main Features ?Fully waterproof ?Measures EC, CF and PPM scales ?High conductivity measurement for a broad range of crops ?Factory calibrated, never needs recalibration ?Auto turn on and off ?No external knobs or switches Model KL-2385I KL-2385II KL-2385III Measuring range 0.4 ~ 5.2EC 4 - 52CF 280 ~ 3640ppm(EC x 700) 200 ~ 3000ppm(EC x 500) 0.4-4.4EC 4- 44CF 280-3080ppm(EC x 700) 200-2200ppm(EC x 500) 0.2-3.6EC 2- 36CF 140-2520ppm(EC x 700) 100-1800ppm(EC x 500) Accuracy ?% Resolution 0.1EC 1CF 70ppm 700 50ppm 500 Operating Temperature 0 ~ 50(32 - 122F) Batteries 3?.5V (AA Batteries) Dimensions 415mm x 23mm Weight 180g