my experice in using the meter tool, the most importtant thing is understanding what is TDS (Total Dissolved Solids).
It is the concentration of dissolved solids (Salt) in a liquid (Water). Look at the meter closely , you will see two metal tips there. What transmitted between them is a small electrical current , so it can calculate the concentration of solids (Salt).
Hope this can help you
Replied by Joyce on Jun 19, 2015
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