| Brand | TECHTONGDA |
|---|---|
| MPN | 240044 |
Check the listing for details. TDS Water Quality Testing Pen TDS Values Detecting Tool Water TDS Tester New. Condition: New. Listed at 3.00 USD. TDS represents the total soluble solids content in water, and the lower the TDS value, the purer the water quality. (Note: The above refers to the international standard for direct drinking water!). Detecting TDS values.
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