TIER1-TDS-3-W
Total dissolved solids (TDS) are the total weight of all solids (minerals, salts, metals) that are dissolved in a given volume of water. The lower the TDS level in the water, the more efficiently your bodys cells can use the water. Conversely, higher TDS levels can indicate water that is more difficult for your body to use and has more contaminants that can pose health risks.
This meter is factory calibrated with dual range measurement and a 10 minute auto-shutoff to conserve battery life. Features a hold function that saves measurements for convenient reading and recording. Order the TDS-3-W Tier1 TDS Water Test Meter today!
The Tier1 TDS-3 is a handheld digital meter that measures Total Dissolved Solids (TDS) in water, expressed in parts per million (ppm). It detects the combined content of inorganic and organic substances such as minerals, salts, and metals dissolved in your water. The TDS-3 measures from 0 to 9990 ppm, making it ideal for testing tap water, RO systems, well water, hydroponics, aquariums, and pools to verify filtration performance.
How accurate is the Tier1 TDS-3 meter and does it auto-calibrate?The Tier1 TDS-3 offers ±2% accuracy and features Automatic Temperature Compensation (ATC) between 0.1°C and 80°C, ensuring consistent readings regardless of water temperature. It comes factory-calibrated with a 342 ppm NaCl solution, but can be recalibrated using the built-in trimmer pot if needed. The meter also includes a Hold function to lock readings and an auto-off feature that conserves battery after 10 minutes of inactivity.
How do I use the Tier1 TDS-3 to test my water filter's performance?To test filtration efficiency, first measure your unfiltered tap water by removing the protective cap and immersing the TDS-3's electrode up to the maximum immersion level (2 inches). Stir gently, wait for the reading to stabilize, and press HOLD. Then test your filtered water the same way. The difference between the two readings, divided by the original, gives you the filter's rejection rate—especially useful for verifying reverse osmosis systems, which should show 90%+ reduction.
What is the battery life and what powers the Tier1 TDS-3?The Tier1 TDS-3 is powered by two included LR44 button cell batteries, providing approximately 1000 hours of continuous use. The auto-shutoff feature (after 10 minutes of inactivity) significantly extends battery life for occasional testing. Replacement LR44 batteries are widely available and easy to swap via the battery compartment on the back of the unit.
Is the Tier1 TDS-3 meter a replacement for certified water quality testing?No, the Tier1 TDS-3 is a screening tool, not a certified laboratory test. While it provides fast, reliable TDS measurements to monitor your water's overall dissolved solids and gauge filter effectiveness, it does not identify specific contaminants like lead, chlorine, bacteria, or VOCs. For comprehensive analysis, pair the TDS-3 with a certified lab test or specialized test strips. It's an excellent everyday tool to confirm your reverse osmosis system or water filter is performing correctly.


