Xiaomi Portable TDS Meter Detection Pen Digital Water Filter Professional Measuring Quality Purity PH Tester IPX6 Waterproof
Pen which can test the quality of the water, it also determines whether purification is required. Mi TDS Pen reacts to organic compounds, and heavy metals like nickel, chromium etc. and soluble salt content. The pen is IPX6 waterproof and has automatic temperature calibration and precision in measurement.