Price $26.99
TDS Meter - Digital Water Quality Tester
Measure the total dissolved solids (TDS) and temperature of your water. This TDS meter uses Automatic Temperature Compensation (ATC) for improved accuracy as warmer water gives higher readings.
- Measures total dissolved solids (TDS) and temperature
- Automatic Temperature Compensation (ATC)
- Factory Calibrated with a 342 ppm NaCl solution. The meter can be recalibrated with digital calibration using the push buttons
- Large display with easy-to-read LCD screen includes simultaneous temperature reading
- Auto-Off function, data-hold function and low-battery indicator
- Magnetic backing easily sticks to most refrigerators
Specifications
- Measurement Range: 0-5000 parts per million (ppm)
- Temperature Range: 32-176°F (0-80°C)
- Resolution: 1ppm; Temp. resolution is 0.1°F/C
- Accuracy: ±2%
- Conversion Factor: NaCl (avg. 0.5)
- Calibration: Digital calibration by push button
- Housing: Water-resistant
- Power Source: 1 x 3V button cell (included)
- Dimensions: 5.9" x 1.1" x 0.5"
- Weight: 1.5 oz
Calculate Rejection Rate
A TDS meter is a great tool for calculating the effectiveness of your reverse osmosis system by measuring the total dissolved solids (TDS) content of your water both before and after the RO system. You can also use these readings to tell you when the membrane needs to be changed.
Here's how to use your TDS meter to successfully test your RO system:
Use two clean cups, fill one cup with filtered water from your RO system and the other cup with tap water. First, place the TDS meter in the cup with the filtered water and record the reading. Then place the TDS meter into the cup with tap water and record the reading. Now, compare the two readings.
The filtered water's TDS reading should be within 3-10% of your tap water's TDS reading. This is a normal range. You should test your water once or twice a year to monitor your membrane condition. When your filtered water's TDS readings increase to 15-20% of your tap water's TDS reading, then it is time to replace your membrane.
Use the calculator below to determine the rejection rate of your reverse osmosis system.
