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.