Digital TDS Meter – Know exactly what you’re drinking in seconds
You don’t need to be a chemist to test your water. Simply dip the sensor, read the value, and instantly know if your filter needs replacing or if your water source is compromised. This digital TDS meter provides an instant reading in ppm, with no complex calibration or hassle required.
Note: This device measures the electrical conductivity of water and converts it into a TDS value. It does not identify specific types of contaminants, but rather the total level of dissolved impurities.
Why choose this model? (Key benefits):
- 0–9990 ppm range — covers everything from distilled water to highly mineralised sources without needing to switch devices
- ±2% accuracy — precise enough for home use and monitoring professional RO (Reverse Osmosis) filters
- Data Hold function — freezes the reading on the screen so you don’t have to keep your eyes on the display while removing the sensor from the water
- Auto-off after 10 minutes — saves battery life, ensuring they last for months with normal use
- Pre-installed LR44 batteries — ready to use straight out of the box, no trip to the shop required
- Compact and splash-proof design — fits easily in your pocket and is simple to clean after every use
- Easy-read LCD display — clear visibility even in low light, without needing to tilt or hold it close to your eyes
Performance and Details
Water conducts electricity based on the number of ions, minerals, salts, and metals dissolved within it. The TDS meter measures this electrical conductivity and automatically converts it into a value in ppm or mg/L — the lower the number, the purer the water. It operates within a 0–50°C range, making it suitable for testing warm water from purification systems.
Quick TDS interpretation guide:
- 0–10 ppm: Distilled water – maximum purity
- 10–150 ppm: Purified water – excellent quality
- 150–250 ppm: Drinking water – within normal limits
- Over 250 ppm: High mineralisation – may have a salty, metallic, or bitter taste; filtration recommended
| Parameter | Value / Detail |
|---|---|
| TDS Measurement Range | 0 – 9990 ppm / mg/L |
| Accuracy | ± 2% |
| Operating Temperature | 0 – 50 °C |
| Display | Fast-read LCD |
| Data Hold Function | Yes – freezes the value on screen |
| Auto-off | After 10 minutes of inactivity |
| Power Supply | 2 x LR44 batteries (included) |
| Recommended Applications | Drinking water, aquariums, pools, RO filters, purification systems |
Package Contents
- 1 x Digital TDS Meter
- 2 x LR44 Batteries (pre-installed)
- 1 x Protective carry case
Frequently Asked Questions
What is TDS and why does it matter for my drinking water?
TDS (Total Dissolved Solids) represents the total amount of dissolved particles in water, including minerals, salts, metals, and other compounds. A high level can affect taste and indicate unwanted impurities. Regular monitoring tells you exactly when your filter needs replacing or if your water source is compromised — before you can even taste the difference.
Can I use this for my aquarium or swimming pool?
Yes, absolutely. It works with any water source, including drinking water, aquariums, pools, wells, or filtration systems. Just dip the sensor in and get your reading in seconds.
Do I need to calibrate it before the first use?
No. The device comes factory-calibrated and is ready for immediate use once you remove the battery tab (batteries are pre-installed).
What is a normal TDS value for drinking water?
Between 150 and 250 ppm is considered the normal range. Anything below 150 ppm indicates high-quality purified water, while levels over 250 ppm may signal lower quality that could benefit from additional filtration.
How long do the included batteries last?
Thanks to the 10-minute auto-off feature, power consumption is minimal. With normal use — a few tests per day — the LR44 batteries will last for months without needing replacement.
Photo Gallery
**n*a M****** T***** –
Eye-opening to see what’s in my tap water! Very easy to use and essential if you have an aquarium.