The titration error is a systematic error in the measured end-point of a titration.[1][2] It is inherent in the method, and so cannot be eliminated by performing repeated titrations on the same sample, not even by different analysts using different equipment. The titration error is usually negligible for routine titrations using standard procedures, but must be taken into account for high-precision analyses by titration and in the design of new methods.
There are two components to the titration error:
Both of these errors can be reduced by good experimental design. They can be eliminated altogether by using an interpolated endpoint, as in potentiometric or conductometric titrations, but at the expense of an increased Type A measurement uncertainty ("random error").