The measurement of conductivity in the laboratory is a crucial practice to understand the quality of water and the concentration of electrolytes in it; this measure is useful to detect impurities and harmful substances and, in addition, to control the purity of a certain water sample.
In this regard, it is essential to identify the factors that affect these calculations to ensure accurate results; first, the sample preparation process should be highlighted as one of the most important factors to obtain reliable conductivity measurement results.
Prevention to be taken at the time of conductivity measurement
In this respect, the first thing to be taken into account is the homogeneity of the sample analyzed, which must be previously diluted to avoid excessive concentration of some components; this precaution is essential to avoid possible concentration errors.
In addition, another key factor to be taken into account is the temperature of the medium., this is because the water measures the content of ions in the water with respect to temperature, so it is not necessary to neglect the previous regulation of it.
The conductivity measurement is sensitive to different factors
In addition, it should be noted that conductivity measurement equipment usually has a large variation in sensitivity to the above factors. Therefore, to ensure the final certification of the final results, periodic calibration is recommended.
On the other hand, it is necessary to mention the acidity of water, i.e. its pH, this is because the electrolytes have an asymmetric response to variations in the pH, and this can cause deformations in the overall result.
Techniques to be taken into account when performing the conductivity calculation:
On the other hand, it should be noted that the measurement time also plays an important role in the calculation of conductivity, since the quality of the water can vary over time if the temperature of the medium changes.
It should also be borne in mind that environmental-related components such as organic matter and dissolved gases may affect the results of conductivity measurements.
How to get good results at the right level of accuracy:
The equipment must be calibrated to detect the level of electrolytes in the solution and the related components interfere in its detector, this can be seen through the appearance of spiral matter in the sampling line of the equipment.
These factors range from sample preparation to the presence of different components in the medium. Therefore, laboratories should be aware of the role these elements play in the calibration of the meters.
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