General description The 3-in-1 Digital Water Quality Tester is an advanced device designed to measure TDS (Total Dissolved Solids), EC (Electrical Conductivity), and temperature in water. This versatile tester is perfect for various applications, including drinking water, hydroponics, swimming pools, and aquariums. It helps users distinguish between safe and unsafe drinking water. Technical specifications Measurement range: 0-9990 ppm Temperature reading modes: Celsius and Fahrenheit Backlight technology: Low power consumption Usage Ideal for testing tap water quality Suitable for household water filtration devices Applicable for aquariums and swimming pools Useful in hydroponics and colloidal silver testing Field water quality testing Other information The red backlight indicates when ppm exceeds 40, signaling that the water quality is not ideal for drinking. Automatic shut-off feature after 2 minutes of inactivity to conserve battery power.