What are the different scales for conductivity?

What's the difference between EC and the other measures?Electricity will not be conducted by pure water.Electricity is usually conducted by water because it is full of impurities.Bluelab probes have two black dots on the end.When these are placed in a solution, an electrical current travels through the water to the other electrode and counts the number of charged ion present.The reading is presented as a Conductivity Factor reading.

The number of parts per million is measured by the PPM.They are pure numbers with no units of measurement.There are many different scales used for different industries around the world.Did you know there are more than two scales?It's important to know the difference between the ppm500 and ppm700 scales.

While this is what each scale is based on, in reality these scales do not only measure the KCl content of the solution, but also the overall conductivity of all charged ion in it.

The true amount of a solution can only be determined by a chemical analysis.They are only present on Bluelab products.

If the desired ppm scale is selected on the Bluelab device, the EC of the solution will be converted to a reading.The conversion from EC to ppm is as follows.