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Statistical Calibration of instruments Using Water Activity Determination As An Example
Author(s) -
SAGUY ISRAEL,
DREW BRUCE
Publication year - 1987
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1987.tb06723.x
Subject(s) - calibration , confidence interval , line (geometry) , inverse , statistics , interval (graph theory) , statistical analysis , measuring instrument , linear regression , mathematics , environmental science , thermodynamics , physics , geometry , combinatorics
An example is given of a method for establishing the confidence limits 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.