What is TDS?
TDS (Total dissolved solids) is a measure of the dissolved combined content of all inorganic and organic substances present in a liquid in molecular, ionized, or micro-granular (colloidal sol) suspended form.
We use this merit to measure the clearness of the water. The higher the TDS value, the more dissolved solid particles are in the water. We use this merit to check our household tap water, RO system water, bottled water, pool, hydroponic nutrient level, aquarium, etc.