Titration error is the difference between the observed endpoint and the true stoichiometric point of a titration. It arises because the indicator changes colour at a point that does not exactly coincide with complete reaction. Choosing an indicator whose colour change occurs as close as possible to the stoichiometric point keeps this error small.

滴定误差是观察到的终点与滴定真正化学计量点之间的差异。它产生于指示剂变色的位置并不恰好与反应完全相吻合。选用变色点尽量接近化学计量点的指示剂可使该误差减小。