Specification:
TDS Measurement Range: 0-9990 ppm
Color: Light Grey
Readout Accuracy: +/- 2%
Temperature range: 0-50°C
Batteries: Preinstalled 2pcs LR44 Button Battery
Size: 6.1*1.14*0.74inch
Weight: 60g/2.11oz
Packaging: Leater carrying case with belt clip

How to use:
1.Remove the protective cap and turn the ON/OFF switch on.
2.Immerse the meter electrode into the water/solution in about 1 inch deep of water.
3.Gently agitate the TDS meter to remove bubbles.
4.Waiting until the display stabilizes,the TDS meter automatically compensates for temperature variations once the readout is stabilized,press the hold button to save reading.
5.After usage,shake off water from your meter or wipe it with a tissue.

Temperature Test Instructions:
1.Remove the TDS meter cover and use it in liquid or air.
2.Pressing the TEMP key,the display will convert to a Celsius display,press the key again to convert to Fahrenheit temperature test,then press the key third time to return to water quality test.

Influence factor
1.Water temperature:TDS meter pen can not to measure the hot water bodies.
2.The velocity of water flow:TDS pen can not to measure the large velocity of water flow.
3.Area:TDS values vary from region to region and city to city due to different pipelines and water sources.

TDS In PPM
Distilled water TDS value: 0 ppm
Purified water TDS value: ＜ 10 ppm
Spring water TDS value: 100-200 ppm
Tap water TDS value: 100-250 ppm
Pure alcohol TDS value: 0 ppm
Warning
Avoid immersing the TDS pen in water, avoid direct light and high temperature, avoid impact and drop down.
Important message:
If your PH test pen can't work, or the test data is inaccurate
please replace the battery, battery model: LR44 Button Battery, quantity: 2PCS.