NUTRIENT WAND - EC / PPM / CF METER + TESTER
These nutrient wands are an affordable nutrient tester which allows you to measure EC (electricity conductivity), CF (conductivity factor) and PPM (parts per million) all in one. 
Measure EC (Electricity Conductivity), CF (Conductivity Factor) and PPM (parts per million) in one stick
High conductivity measurement for wide range of crops
100 % Fully Waterproof
Easy to use, no external buttons
Automatic Power On / Off when the meter senses solution
Built with Automatic Temperature Compensation (ATC)
Factory pre-calibrated
Measuring range:
CF: 4 ~ 52 CF
EC: 0.4 ~ 5.2 EC
TDS: 280 ~ 3640 ppm (EC x 700)
TDS: 200 ~ 2600 ppm (EC x 500)
Resolution:
CF: 1 CF
EC: 0.1 EC
TDS: 70 ppm (700 conversion factor)
TDS: 50 ppm (500 conversion factor)
Accuracy: ±4 % of reading
Automatic Temperature Compensation: 0 ~ 50 °C (32 ~ 122 °F)
Operating Temperature: 0 ~ 50 °C (32 ~ 122 °F)
Calibration: Factory pre-calibrated
Automatic Power On / Off
Power: 3 x 1.5 V AA Batteries (Included)
Item Size: approx. 415 (L) x 23 (W) x 23 (D) mm (16.3′ x 0.91′ x 0.91′ inch)
Item Weight: approx. 179 g