pH Test accuracy

To ensure proper pH test results, you need to be aware of the factors that influence the accuracy of your measurement.

What accuracy can you expect?

The accuracy of your pH measurement is in direct relation to the accuracy of the standard buffer solution used to calibrate your pH meter.

Realistic accuracy of your pH values:

Laboratory:   ± 0.05 pH
       Online:   ± 0.2 pH

Temperature influence

Temperature plays a key role in pH measurements and will have a big impact on the reliability and accuracy of your pH values.


We have already mentioned the importance of your pH calibration. Just a reminder, to achieve high measurement accuracy, the temperature difference between the calibration buffer and the measured sample should be minimized as much as possible.

Measured media

The temperature not only has an impact on your pH electrode, the pH of any solution is a function of its temperature.

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