TDS Meter, Water Quality Tester Filter Pen, Accuracy Testing Water Quality for Drinking Water Purity Test, Swimming Pools, Aquariums, Etc.;

TDS Measurement Range: 0-9990 ppm
Color: Light Grey
Readout Accuracy: +/- 2%
Temperature range: 0-50°C
Batteries: 2 X LR44 batteries required.(included)
Size: 6.1"*1.2"*0.9"
Weight: 60g
Packaging: Leather bag

How to use:
1.Take off the protective cap and press the ON/OFF switch.
2.Immerse the meter electrode into the water until the immersion line.
3.Gently agitate the TDS meter to remove bubbles.
4.Waiting for the reading is stable in 5 seconds,press the hold key and check the reading.
5.After using,dry the test pen,press ON/OFF for 3 seconds and it will shut down,then put the cap back on it.

Temperature Test Instructions:
1.Remove the TDS pen 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.