(100)4-in-1 TDS & EC Water Quality Test Meter

Clearance surplus stock of this 4-in-1 digital water quality testing pen. It can quickly measure TDS, EC value and water temperature in both Celsius and Fahrenheit, delivering accurate readings within 5 seconds. Equipped with high-sensitivity titanium alloy electrodes, the tester features data hold function and 4 switchable display modes. Compact portable design with protective cap, widely used for testing drinking water, aquariums, hydroponics systems, swimming pools and RO water filters. All units are brand new, available at discounted price while inventory lasts.