Conductivity definition: Conductivity is the ability of a substance to conduct electricity. It is opposite to resistance value. The unit of measurement is Siemens/cm (S/cm), this unit10-6 itemsExpressed in S/cm,10- 3 itemsAt that time, it was expressed in mS/cm.
The EC meter is a conductivity meter that measures conductivity in mS/cm. The unit of EC meter is EC, which is actually equivalent to mS/cm, meaning EC=mS/cm.