A TDS (Total dissolve solid) meter is a convenient digital tool to instantly check your water quality. TDS = Total Dissolved Solids, which is any salt, metal or mineral in the water. With the push of a button, the TDS meter can tell you your overall water purity level,which will be displayed on the screen in ppm (parts per million). The TDS is great for checking your tap water quality, or knowing when to change a filter. The TDS is a great tool for drinking water,water filtration and purification, colloidal silver, hydroponics (test your nutrients), aquariums, RO/DI systems, pools and spas, commercial and industrial applications and more.
Measurement Range: 0-9990 ppm , 1 ppm Resolution, +/- 2% Readout Accuracy.
Temperature Button: Test water temperature, 31 - 200 F degrees, 1 F degree resolution.
Power source: 2 x 1.5 V(LR44 Button Cell) INCLUDED