M. Thompson et al., MULTIPLE UNIVARIATE SYMBOLIC CONTROL CHART FOR INTERNAL QUALITY-CONTROL OF ANALYTICAL DATA, Analytical communications (Print), 35(7), 1998, pp. 205-208
A symbolic chart showing simultaneously the results of a large number
of analytes has been devised for analytical internal quality control.
The primary purpose is to provide a rapid visual appraisal as a pseudo
multivariate method. The chart can be readily produced and can be modi
fied to emphasise particular aspects.