CONDUCTIVITY METERS AND WHY YOU NEED TO CALIBRATE
29 September 2019
An EC (Electronic Conductivity) Meter is a device used to measure the electrical conductivity of a solution. Small labs use these types of meters to help solve problems in the agricultural sector that concern the productivity of a soil.
Calibrating Conductivity meters is important to ensure their abilities to measure how well solutions conduct electricity and remain accurate. You should calibrate the instrument each time it is used in order to get accurate readings at all times.
How to Calibrate:
Calibration of these meters require the use of a solution that has a known conductivity to adjust the meter so as to read that known conductivity when testing that solution. Metal containers will affect the conductivity of the solution, so it is important to always use a plastic container when checking and calibrating the conductivity meter.
The calibration process of conductivity meters does require a keen and clean procedure to ensure the device is set to make accurate measurements. Contamination of the standard solution can cause its conductivity to vary away from the known.
Conductivity of solutions also depends on other variables such as temperature, and such factors have to be considered correctly when calibrating a particular meter. Electronic calibration should be conducted by well-trained people, to handle such solutions and done in appropriate lab environments.
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