Article: Water Activity Determination of OSD Products using Frequency Modulation Spectroscopy

The FMS-Water Activity Analyzer is a nondestructive headspace gas analyzer used to make direct water activity measurements and quantify relative humidity conditions inside containers. This article explains the technology and describes a case study that demonstrates water activity measurements at multiple time points, which can be correlated to changes in critical quality attributes. The ability to generate robust data with one instrument is a big advantage for combining a variety of formulation and packaging studies in all stages of the product life cycle.