Test the quality of your water to ensure you have high water quality.
A TDS meter (aka ppm pen, nutrient tester, tds stick) is an convenient digital water tester to instantly check your overall water quality. TDS = Total Dissolved Solids, which is any salt, metal or mineral in the water. With the push of a button, the TDS-3 can tell you your overall water purity level, which will be displayed on the screen in ppm (parts per million). The lower the TDS level, the purer the water. The TDS-3 water tester is a great tool for checking your tap or drinking water, water filtration and purification system, hydroponics, aquariums, pools and spas, commercial and industrial applications and more.
TDS range: 1-9999PPM/mg / L.
Auto shut-off: 10minutes.
Battery: 2?LR44 cell batteries (Not including batteries)