Xiaomi Mi TDS Pen Review – Elegant Water Tester By Mi

We live in a world where modern technology is rapidly advancing, bringing with it numerous benefits. However, there are also significant downsides, such as environmental pollution in our water, air, and nearly everything else. Fortunately, technological advancements have enabled the creation of solutions like water purifiers and air purifiers.

One notable contributor to affordable and high-quality products is Xiaomi. Whether it’s air purifiers, water purifiers, smartphones, laptops, and more, Xiaomi consistently delivers top-notch products at budget-friendly prices.

Xiaomi Mi TDS Pen Review

As water pollution becomes increasingly prevalent, the Xiaomi Mi TDS Pen emerges as a valuable tool to assess water quality, determining its drinkability. Let’s delve into a comprehensive review of the Xiaomi Mi TDS Pen.

Unboxing & Testing

Design & Appearance

In all honesty, the Xiaomi Mi TDS Pen stands out as one of the most aesthetically pleasing TDS Pens I have ever encountered. Typically, TDS pen designs are rather uninspiring, but Xiaomi’s creation exudes elegance with its pure white color that captivates the eye.

Features & Performance

The Xiaomi Mi TDS Pen measures the Total Dissolved Solids (TDS) content in water. It’s essential to note that this pen doesn’t provide a complete water analysis, but TDS serves as a common guideline for water testing.

Dissolved solids encompass metals, salts, minerals, cations, or anions in water. Lower TDS levels indicate purer water. TDS readings are measured in “parts per million” (ppm) or “mg/L.” In India, drinking water with a TDS level above 500mg/liter is considered unsuitable. Due to water scarcity, many people end up consuming water with higher TDS levels.

Mi TDS Pen Review

The Xiaomi Mi TDS Tester is user-friendly. Though it doesn’t come with batteries (which need to be purchased separately), inserting two button cells, readily available on Amazon, allows for seamless usage.

How To Use Xiaomi Mi TDS Tester:

  1. Remove the pen cap.
  2. Press the TDS button.
  3. Submerge the pen head in water.
  4. Check the display for the TDS reading.
  5. Press the TDS button again to switch off after use.
Xiaomi Mi TDS Pen

Mi TDS Pen Water Test And Result

I conducted tests on tap water and purified water from various brands. The results appeared accurate:

  • Aquafina: 3
  • Kinley: 20
  • Bisleri: 79
  • Tap Water: 83

Aquafina, with a TDS of 3, indicates almost complete mineral filtration, potentially depriving the body of essential minerals. Kinley, with a TDS of 20, performed better, while Bisleri, with a TDS of 79, aligns with the label claim of added minerals. Tap water, surprisingly, recorded a TDS of 83, suggesting a presence of beneficial minerals.

In my opinion, tap water with minerals is suitable for consumption, but it’s crucial to check TDS ratings and water clarity to avoid potential harm from dust particles.

Tap Water vs Purifier Water

The debate over tap water versus purified water is contentious. If your tap water has a TDS under 200 and is supplied by the government, you may not necessarily require an RO purifier. However, for added safety, opting for a UV water purifier can eliminate bacteria, ensuring safe drinking water.


I strongly recommend the Mi TDS Pen, considering the importance of pure water in our daily lives. With this tool, you can easily determine the drinkability of water, making it a must-buy for travelers. Priced at Rs 499, it offers a cost-effective solution for water quality assessment.

For the best prices in India, you can find the product using this link: Buy Here.

I hope this Mi TDS Pen review aids you in making an informed decision. Feel free to share this article with your friends and family.

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