What are the standard units of conductivity?

Conductivity is a measure of a solution's ability to conduct electric current, which is influenced by the concentration of ions in the solution. The standard units of conductivity are microsiemens per centimeter, denoted as µS/cm. This unit reflects that conductivity measurements are often taken in very dilute solutions, where lower concentrations of ions lead to lower conductivity.

Using µS/cm allows for a precise representation of conductivity levels, which is essential in various applications, including water quality monitoring and laboratory testing. The other units mentioned, such as millisiemens per centimeter (mS/cm) and nanosiemens per centimeter (nS/cm), serve as different scales but are not the standard unit for general conductivity measurements. Each of these units is used in specific contexts based on the required precision or the concentration of the solution being measured.