Decagon Devices AquaLab Vapor Sorption Analyzer (VSA)

The AquaLab Vapor Sorption Analyzer (VSA), by Decagon Devices, allows scientists to better understand moisture in products and pinpoint quality control issues.

The way a product is influenced by temperature and humidity changes can reveal important details about physical and chemical changes that end shelf life. This type of measurement is called an isotherm. Isotherm generation technology tracks changes in the amount of moisture in a product as the water activity changes.

The device is claimed to be the only moisture sorption analyser to combine both dynamic and traditional isotherm methods in one instrument. It provides hundreds of data points and is said to show details that no isotherm generator has shown before, such as glass transition. Users experience greater resolution while still viewing reactions such as crystallisation.

The analyser provides valuable insight into product development, shelf-life estimation, packaging calculations, temperature abuse modelling and component mixing models in hours instead of weeks.