TDS Tester is used to measure the total dissolved solids in water , a dedicated tester . Pure water contains dissolved total solids is very small , only about zero to tens of milligrams per liter . If the water is contaminated or has dissolved into many other electrolytes , the total solid content increased . TDS tester can be fast and convenient to directly measure the type of indicators . Users in the course of the TDS tester as long as the test end into the water being tested , TDS tester immediately put the water dissolved in the foreign body content test and display it . In other words , the number displayed on the TDS tester is the total amount of the substance dissolved in the water .

Factors that affect TDS testing :
Water temperature : TDS  can not be used to measure high temperature liquid (for example: hot water)
Water flow rate : TDS can not be used to measure large swaying liquid

 

Instructions for use :
1 . Remove the pen cover , open the ON switch ;
2 . Put the pen into the test solution , the solution height should not exceed 2cm ;
3 . The pen will stir in the solution until the reading is stable (2-6 seconds) , TDS value will be displayed on the screen , then press the HOLD key to lock the value .
4 . After using the dry wipe the water on the head , with clean water clean, cover the pen can be back .

Caution :

Avoid soaking the TDS pen into the water , avoid direct sunlight , away from high temperature , avoid impact and weight .

Product range :
Detection of tap water , purified water , mineral water , water quality is in line with the state to develop drinking water standards : water 300PPM below , pure water 50PPM (national standard) , mineral water 100-200PPM between .

 

TDS value	water quality
0 ~ 9	pure water
10 ~ 90	mountain spring water , mineralized water
90 ~ 250	purified water
260 to 600	tap water
600 or more	contaminated water