Ind. Code § 16-18-2-371.5Download PDFCurrent through P.L. 171-2024Section 16-18-2-371.5 - "Water activity" or "Aw" "Water activity" or "Aw" refers to the:(1) measure of the free moisture in a food; and(2) quotient of the water vapor pressure of a substance divided by the vapor pressure of pure water at the same temperature.IC 16-18-2-371.5Added by P.L. 151-2024,SEC. 6, eff. 7/1/2024.