The AP-2 is an easy to use digital meter that measures Electrical Conductivity, a key indicator of overall water purity.
It is made by the American company HM Digital Inc. and is exclusively distributed in Greece by MySpring.
It is well known that the water Electrical Conductivity (EC) rises directly proportionally to Total Dissolved Solids.
The measuring unit of water's EC is the μS (micro Simens).
The EC of healthy and well taste water is 200-400 μS.