Journal of Food Science · 1984 · 157 citations · 2 references
AgricultureFood ScienceFood AnalysisThermal AnalysisWater Balance StudiesCalibrationSalinity AssessmentSalinity SourcesTemperature MeasurementWater Activity AnalysisWater ContentChloride Concentration MeasurementCompilations In LiteratureSalinity Calibration ModelsTemperature-salinity RelationsWater Salinity
ABSTRACT In view of the uncertainty aboui the exact water activity.(a w ) of some solutions (saturated and unsaturated) used as references sources, the use of unsaturated NaCl solutions as isopiestic standards for calibration of hygrometers is proposed. It is shown that there is an excellent agreement on the exact value of NaCl solutions between various literature compilations and theoretical models. Further, it is also shown that in the important range (for food related applications) of 15–50°C the a w of NaCl solutions is almost invariant.
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