Gardeners can get fast and true readings in even the most humid growing environment with the Aqua Dip™ EC/TDS/Temperature Tester from HANNA Instruments®. Factory-calibrated waterproof tester has an EC range of 0-3999 µS/cm, TDS of 0-2000 ppm and temperature of 32-122 degrees Fahrenheit. EC and TDS accuracy is ±2% full scale. The Aqua Dip™ has automatic temperature compensation and shut-off as well as a data hold feature. The 15.5” dip stick also comes in handy for stirring nutrient solution. Unit includes two 1.5-volt batteries, instructions and a one-year manufacturer’s warranty.