conductivity, a physical concept, means that the product of this quantity and the strength of the electric field in a medium is equal to the conduction current density. For an isotropic medium, the conductivity is a scalar; for an anisotropic medium, the conductivity is a tensor. In ecology, conductivity is the ability of a solution to conduct an electric current in numerical terms. The units are expressed in millisiemens per meter (mS/m).
& micro;s/cm refers to micro Siemens per centimeter