Smart 3 in 1 Continuous Monitor/Portable Meter
Smart 3 in 1 Continuous Monitor/Portable Meter at HorticultureSource.com -
pH/EC/TDS Combo Meter, Range: 0.00 - 14.00 pH, 0 - 4000 ppm, 0.00 - 6.00mS/cm, Accuracy 0.20 pH and 2% Full Scale for EC & TDS, Comes with SE600 Combo Probe, 110 Volt Power Supply and 9 volt battery, With Unit Mounting Kit, a 20ml Sachet of Calibration Solution of pH 7.01, 1500 ppm and 1413S/cm Uniquely Designed to serve as both a continuous combo Monitor and portable combo meter.