Hydroponics Aquarium EC Conductivity Tester Meter µS/cm - Multi Testers - Amazon.com
Specifications: Range: 0-9990ppm Resolution: 1ppm (0-999ppm) 10ppm (1000-9990ppm) Accuracy: ±2% full scale Calibration: Factory calibrated Auto shut-off: 10 minutes Temperature compensation: Automatic Operating temperature: 0℃ to 50℃ Power source: 2 x 1.5...