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Norm

ISO 8466-2:2001

Issue date: 2001 11 01

Water quality — Calibration and evaluation of analytical methods and estimation of performance characteristics — Part 2: Calibration strategy for non-linear second-order calibration functions

It is not always possible to accurately describe the relationship between a set of calibration points with a rectilinear curve, even by decreasing the working range. Inst...
Valid
Publisher:
International Organization for Standardization
Format:
Digital | 12 Pages
Language:
English

It is not always possible to accurately describe the relationship between a set of calibration points with a rectilinear

curve, even by decreasing the working range. Instead of the linear regression analysis, a least-squares fit to a

second-order polynomial is applied (see test for linearity in 4.1.3 of ISO 8466-1:1990[1]). Using this fit, it is possible

to calculate not only the calibration function but also the confidence interval associated with it.

This part of ISO 8466 is intended primarily for use in method development and may not necessarily be applicable to

all routine analyses.

ISO 8466-2:2001
2001 11 01
Water quality — Calibration and evaluation of analytical methods and estimation of performance chara...
Norm
ISO 8466-2:1993
1993 05 13
Water quality — Calibration and evaluation of analytical methods and estimation of performance chara...
Norm