title: Measuring and maximizing precision in analyses based on use of calibration graphs.
abstract: Confidence-band statistics are used as a basis for measuring and improving precision in chemical analysis. Currently used calibration procedures often result in loss of precision and are therefore replaced by weighted least-squares and multiple-curve calibration techniques. Measures of precision such as correlation coefficient, relative standard deviation, and detection limit are replaced by more meaningful parameters based on confidence-band statistics. These new techniques are incorporated into a general scheme for developing methods for routine analysis.
authors.affiliation: Division of Laboratories and Research, New York State Department of Health, Albany, NY 12201, U.S.A.
authors.forename: D G
authors.initials: DG
authors.lastname: Mitchell
authors.forename: J S
authors.initials: JS
authors.lastname: Garden