Some of the effects of temperature on pH measurement have been described or alluded to in both
instrument manufacturers instructions and independent scientific literature. Some of these have been
presented in a very theoretical manner and thus have been of limited practical value, others have been
described adequately from a practical perspective. However a comprehensive classification of the principal
effects of temperature on pH with practical remedial actions to correct, reduce or eliminate these errors
has never previously been reported. This paper presents for the first time a clear classification of the
practical effects of temperature on pH. It provides a definite set of guidelines on how the different errors
can be reduced or eliminated thus giving the user greater confidence in the result of their pH
measurements.