Calibration Calibration Introduction Making measurements with any analytical method or instrument requires calibration to ensure the accuracy of the measurement. Both of these methods require one or more standards of known composition to calibrate the measurement.
Titration is similar but requires preparation of a primary standard.
The chief advantage of the working curve method is that it is rapid in that a single set of standards can be used for the measurement of multiple samples. The standard-addition method requires multiple measurements for each sample, but can reduce inaccuracies due to interferences and matrix effects.