Quickly and accurately detect any water source, making every sip of drinking water cleaner and healthier!👍 Suitable for drinking water, swimming pool, aquarium, aquaculture, laboratory and traveling scenarios! ✨Quick And Accurate Detection Adoption of high-precision titanium alloy probe and intelligent chip ensures stable and accurate measurement, real-time data updating, 5-second quick reading, and results are clear at a glance. ✨4-In-1 Multi-function Combines TDS, EC and temperature measurements in one powerful unit with a large backlit LCD screen that is clear and easy to read. TDS (Total Dissolved Solids): Measures the content of dissolved substances in water to determine water purity. EC (Electrical Conductivity): Assesses the water's conductivity, widely used in agriculture, laboratories, and other fields. Temperature Measurement (℃/℉): Monitors water temperature in real time to ensure optimal usage conditions. ✨Premium Quality Made from high-quality materials, ensuring durability and long-lasting performance. Its user-friendly design makes it easy to handle and operate, providing a seamless experience for both beginners and experts. ✨Portable & Easy to Use Lightweight and portable, pen-shaped design, can be carried around, suitable for home, laboratory, agriculture, fish tank, swimming pool, aquarium, industrial inspection and other scenarios. ✨PPM Value Range PPM values of 0-50 indicate ideal drinking water; 50-100 are relatively good; 100-200 are marginally acceptable; 300-400 may cause scale buildup; 400-500 means the water tastes unpleasant; over 500 indicates contaminated water, unsafe for drinking. Product Specification TDS Measurement Range: 0-9999PPM Conductivity Measurement Range: 0-9999PPM Tolerance range: ±2%F.S Unreadable Range: 0-80°C Battery Quantity: 1pc Battery Specification: 1*3V Coin cell, CR2032 Detection range: Water treatment industry/all kinds of domestic water