TDS Meter

  • $ 28.00

What is TDS?

Total Dissolved Solids (TDS) are the total amount of mobile charged ions, including minerals, salts or metals dissolved in a given volume of water.  TDS which is based on conductivity, is expressed in parts per million (ppm).  TDS includes any conductive inorganic elements present other than the pure water molecules (H20) and suspended solids.

TDS affects everything that consumes, lives in or uses water, from fish and plants to plumbing and laboratories. Water with a hight TDS is known as hard water. Acid rain created hard water.


The average person drinks about a gallon of water per day. Adding up the cups of coffee, tea, soft drinks, food, and water, this gallon isn’t too much. At a gallon a day, the average person drinks up to 450, 12 ounce glasses of solids during their life. Think of it… 450 glasses of mineral solids in your system during a lifetime.

For people, appropriate minerals (TDS level) in the water you drink, the more efficiently your body’s cells are hydrated. The higher the TDS level in water, the greater the probability of harmful contaminants that can pose health risks and/or hinder the absorption of water in the body.

TDS Range: 0-9990 ppm
Accuracy: +/- 3%
Batteries: 2 x 1.5V (357A)
Calibration: Factory calibrated to NaCI 342 ppm: Adjustable




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