Abstract: Methods and system for determining water activity of a sample material are disclosed in which a sample material is positioned in a water activity measurement device, a plurality of water activity values of the sample material are measured at a respective plurality of points of time, with the plurality of points in time preceding an equilibrium state of the water activity of the sample material, the plurality of water activity values over time are log-transformed, a trendline of the plurality of water activity values over time is calculated, and the trendline is extrapolated to determine an extrapolated water activity value of the sample material at the equilibrium state. These methods and systems can decrease the time needed to determine the water activity of the sample by reliably predicting and estimating water activity well before equilibrium is reached in the measurement chamber.

Abstract: Methods and system for determining water activity of a sample material are disclosed in which a sample material is positioned in a water activity measurement device, a plurality of water activity values of the sample material are measured at a respective plurality of points of time, with the plurality of points in time preceding an equilibrium state of the water activity of the sample material, the plurality of water activity values over time are log-transformed, a trendline of the plurality of water activity values over time is calculated, and the trendline is extrapolated to determine an extrapolated water activity value of the sample material at the equilibrium state. These methods and systems can decrease the time needed to determine the water activity of the sample by reliably predicting and estimating water activity well before equilibrium is reached in the measurement chamber.

Abstract: An apparatus configured to determine water activity and weight of a sample. The apparatus may comprise a chamber configured to at least partially enclose a sample. The apparatus may also comprise a sensor configured to measure water activity of a sample in the chamber. Additionally, the apparatus may comprise a moisture content adjustment device connected to the chamber and configured to change moisture content in the chamber. An isotherm generation module is also disclosed. The isotherm generation module may be configured to receive water activity measurements from a sensor device and weight measurements from a weighing device, the isotherm generation module being configured to generate an isotherm for a sample based on the water activity measurements and the weight measurements.

Abstract: An apparatus configured to determine water activity and weight of a sample. The apparatus may comprise a chamber configured to at least partially enclose a sample. The apparatus may also comprise a sensor configured to measure water activity of a sample in the chamber. Additionally, the apparatus may comprise a moisture content adjustment device connected to the chamber and configured to change moisture content in the chamber. An isotherm generation module is also disclosed. The isotherm generation module may be configured to receive water activity measurements from a sensor device and weight measurements from a weighing device, the isotherm generation module being configured to generate an isotherm for a sample based on the water activity measurements and the weight measurements.

Abstract: An apparatus configured to determine water activity and weight of a sample. The apparatus may comprise a chamber configured to at least partially enclose a sample. The apparatus may also comprise a sensor configured to measure water activity of a sample in the chamber. Additionally, the apparatus may comprise a moisture content adjustment device connected to the chamber and configured to change moisture content in the chamber. An isotherm generation module is also disclosed. The isotherm generation module may be configured to receive water activity measurements from a sensor device and weight measurements from a weighing device, the isotherm generation module being configured to generate an isotherm for a sample based on the water activity measurements and the weight measurements.

Abstract: An apparatus configured to determine water activity and weight of a sample. The apparatus may comprise a chamber configured to at least partially enclose a sample. The apparatus may also comprise a sensor configured to measure water activity of a sample in the chamber. Additionally, the apparatus may comprise a moisture content adjustment device connected to the chamber and configured to change moisture content in the chamber. An isotherm generation module is also disclosed. The isotherm generation module may be configured to receive water activity measurements from a sensor device and weight measurements from a weighing device, the isotherm generation module being configured to generate an isotherm for a sample based on the water activity measurements and the weight measurements.