WATER REFERENCE

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REPRINTS, COPIES
Saguy, I. and B. Drew. 1987. Statistical calibration of instruments using water activity determination as an example. Journal of Food Science 52(3):767.


Purpose: This study demonstrated the statistical principles and interpretation of a calibration problem, to summarize the current statistical practices, and to illustrate several statistical methods of general applicability.
Abstract: An example is given of a method for establishing the confidence lmiits for the calibration of an electronic instrument utilized in measuring water activity. The method consists of the inverse use of a regression line with associated Working-Hotelling-Scheffe bounds for the true line and the construction of limits suitable for repeated use of the derived calibration. Interval estimates are given for the Kaymont-Rotronics Hydroskop DT, calibrated with vapor pressure manometer measurements of equilibrated salt solutions as standards. The statistical approach has general applicability and should be applied routinely for all calibration problems.

Updated: Thursday, September 6, 2007.

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