NorSway Digital TDS Meter Handheld Water Quality Purity Filter Pen with Carrying Case 0- 9990 PPM TDS Tester Measurement Range 1 PPM Resolution 2% Readout Accuracy Blue

Function:
1. Check the performance of your water filter;
2. Check for hardness (1 grain=17ppm);
3. Make sure you always drink pure water;

Instructions:
1. Remove the cap from the pen and turn it on;
2. Immerse the pen into the test water/ solution but not more than 2";
3. Waiting until the display stabilizes, the TDS meter compensates for temperature variations automatically,
once the readout is stable (30 to 45 seconds), press the hold button to save the value and then read it;
4. After using, shake off water from your meter or wipe it with a tissue.

An affordable way to test your swimming pool, aquarium, tap water, reverse osmosis filter, or appliance water source,
you can finally know whether the water you are drinking or using is acceptable for the application.

Specifications
1. Measuring range: 0-9990ppm
2. Accuracy:+/-2%
3. Batteries: 2x 1.5V LR44 button cells
4. Auto shut-off: 10 minutes
5. Operating temperature: 0-50℃ / 32-122°F
6. ATC(Automatic Temperature Compensation): 0-60℃/ 140°F
7. Weight: 76g/1.13Oz
8. Dimensions: 155*31*23mm(6.1"*1.2"*0.9")

Package includes:
1x TDS Meter
2x 1.5V LR44 button cells (Built-in)
1x Carrying case
1x User's manual

Note:
* Do not use this TDS meter with hot or running water;
* Please make sure liquid level is below 1.5 inch when testing;
* This meter is calibrated from the factory and does not require any adjustment.
* This TDS meter can not test the water ph value, if you want a high accuracy ph meter, please refer to this link:
https://www.amazon.com/dp/B01IB2TIBK