The measurement of water activity or equilibrium relative humidity is a key parameter in the quality control of moisture-sensitive products or materials.

AwTherm, ROTRONIC offers a professional, high-end laboratory unit for temperature-stabilized measurement of water activity in the foodstuffs, cosmetics, or pharmaceutical industries.

Water Activity Measurement


Water activity Contaminants
aw = 0.91..0.95 Many bacteria
aw = 0.88 Many yeasts
aw = 0.80 Many mildews
aw = 0.75 Halophile bacteria
aw = 0.70 Osmiophile yeasts
aw = 0.65 Xerophile mildew


Features

ROTRONIC HYGROMER® IN-1
Highest precision through exact stabilization of temperature
Wide temperature-control range
Excellent reproducibility
Excellent long-term stability
Variable size of sample container
Reference probe exchangeable for calibration or cleaning
Quickest measurements with the AwQuick function
Simple operation via Touch Interface
Conforms to ISO 21807 / EMC 2008/108/EC / IEC EN 61010-1:2010