Drill Bit Set with LCD Screen, TDS/EC Meter, 3-in-1 Digital TDS Tester for Water Quality, EC, Conductivity and Temperature Test Pen

Usage: Test the purity of the filter's water quality, check your water filter's performance, check its hardness, and ensure you always drink pure water.

Fast and Accurate Readings: Turn it on, immerse it in a liquid, and read the display. No need to work with color charts or test strips; a large LCD screen makes reading easy.

3-in-1 Function: Temperature switching (automatic temperature compensation); TDS and conductivity offset with the shift switch. Portable Design: The pocket-sized pen style and compact carrying case allow for easy storage in your pocket or bag, so you can take it anywhere. Wide Application: Ideal for water purifiers and filters, food and beverage quality monitoring (food, vegetables), swimming pools and spas, aquariums, and hydroponics.