Official Xiaomi Mi TDS Pen:
- IPX6 Measuring Water Quality Purity Tester.
- 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.