Dual Function TDS Meter for Water Quality and Temp Measurements
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Total Dissolved Solids Or TDS is a measure of the dissolved combined content of all inorganic and organic substances present in a liquid. TDS is sometimes referred to as parts per million (ppm). You can test water quality levels using this digital TDS PPM meter.
Primary sources for TDS in receiving waters are agricultural & urban runoff, clay-rich mountain waters, leaching of soil contamination, & point source water pollution discharge from industrial or sewage treatment plants.

Chart values represent national U.S. averages. Actual TDS levels for geographic regions may vary.
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