Accurate and Reliable: Automatic temperature compensation ensures accuracy even in the presence of temperature changes. Convenient and Portable: The integrated electrode and controller design makes it easy to carry and use. Dual Display: LCD large-screen display shows both water quality TDS value and conductivity, allowing for simultaneous data comparison. Data Retention Function: Easily cope with various environments with the ability to retain and review previous measurements. Instant Purity Detection: A sensitive probe provides instant visibility of water purity, ensuring quick and efficient testing. Description: Introducing our water testing pen, the ultimate tool for ensuring water quality and purity. With automatic temperature compensation, this pen guarantees accuracy even in the face of temperature changes. The integrated electrode and controller design makes it incredibly easy to carry and use, making it perfect for on-the-go testing. Equipped with a large LCD screen, this pen offers dual display of screen data, allowing you to simultaneously view water quality TDS (Total Dissolved Solids) value and conductivity EC (Electrical Conductivity). The added temperature display ensures you have all the necessary information at your fingertips. With its data retention function, you can easily keep track of your test results, making it effortless to compare and analyze water quality over time. This feature also enables you to confidently tackle various environments, knowing that your previous readings are securely stored. The sensitive probe instantly detects impurities in the water, providing you with visible purity results within seconds. Whether you're testing tap water, aquariums, or hydroponic systems, this pen is a reliable companion that ensures your water is safe and clean. Invest in our water testing pen today and take control of your water quality. Item Name: Water Testing Pen Material: ABS TDS Test Range: 0~9999PPM Conductivity Test Range: 0~9990US/CM Temperature Test Range: 0.1~80.0 Battery Type: 3V (CR2032) Button Battery Product Material: ABS Plastic/metal Alloy Probe Accuracy: 2% Test Items: TDS Value Test, Conductivity Test, Temperature Test Scope of Application: It Is Used As A Test Tool for Drinking Water Quality in Water Treatment Industry, Drinking Water Industry, Family, Personal Home Travel, Field Work, Etc. Influencing Factors: Water Temperature: TDS Pens Cannot Be Used to Measure High-temperature Water Bodies (for Example: Hot Water) Water Flow Rate: TDS Pens Cannot Be Used to Measure Water Areas with Large Sloshing: Each Region And City Has Different TDS Values due to Different Pipelines And Water Sources Maintenance: Keep The Electrode Clean And Cover The Electrode Protective Cover. If It Is Not Used for A Long Time, Please Take Out The Battery Features: Automatic Temperature Compensation, Accurate, LCD Screen Size Details: L: 15.2cm/5.98", W: 3cm/1.18" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Water Testing Pen