4-in-1 Water Quality Monitor Tester Purity/PH EC/TDS/TEMP Digital LED Detector
Multifunctional Water Quality Monitor Tester PH EC/TDS/TEMP Digital LED Detector. Red is 4 in1-PH/EC/TDS/TEMP. Grey is 3 in1-PH/TDS/TEMP. Ideal use to test for water, pools, aquariums, spas, hydroponics, food, wine and beer making and more.