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What is an EC meter?

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Kevin Tu
What is an EC meter?

An ec meter is a simple instrument for the rapid and accurate determination of nutrient content in solutions. A wide variety of designs are suitable for many important agricultural, environmental management and commercial applications.


What is ec?


EC stands for Conductivity (often abbreviated as Conductivity). Conductivity is a measure of the concentration of ions in a sample. It is calculated based on the ability of a substance to carry an electric current in a particular area.


Distilled water is a poor conductor of electricity because it does not contain ions. Water containing salts and other dissolved inorganic chemicals will have higher concentrations of ions and therefore higher levels of conductivity.


Why measure ec?


Conductivity is a valuable and commonly used water quality parameter. By the way, Siemens(s) (i.e. millimeters per centimeter mS/cm or micro-Siemens per centimeter μS/cm) is the unit used when measuring conductivity.


It is important to know that there is a strong correlation between conductivity, TDS, and salinity. Because conductivity is easier to measure than TDS and salinity, many devices first determine the conductivity of a sample and then use algorithms to estimate salinity and TDS concentration.

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