3-in-1 Water Quality Tester Pen – TDS/pH/Temp Multi-Parameter with Backlight

Ultra-Precise Readings
High-accuracy sensors measure TDS (0-9990 ppm), pH (0.01 resolution), and temperature (-5°C to 60°C) with lab-grade reliability.
Premium Build & Portability
Durable ABS housing with ergonomic design; compact pen-style body fits in pockets for on-the-go testing. Auto-off extends battery life.
Multi-Scene Applications
Ideal for drinking water, aquariums, hydroponics, pools, and lab use. Backlit LCD ensures readability in low light.
Instant Calibration & Easy Maintenance
Pre-calibrated pH electrode; includes TDS calibration fluid. Waterproof casing for hassle-free cleaning.
Bulk Savings Advantage
Lowest global wholesale pricing for bulk orders. Stock up on essential water-testing tools effortlessly.
Note:
Ships with protective cap and user manual. Replaceable batteries (included).