4In1 PH/TDS/EC/Temperature Digital Meter Pen Water Quality Analysis Tester
Multifunctional water quality tester, which can test PH, EC, TDS, and temperature of the water. TDS: 1-9999ppm. EC: 1-19999uS / cm. PH: 0.00-14.00pH. Compact pen-shape design, lightweight, you can test water anywhere to get the purest water.