Water Activity Meter

Water activity (aw) is often used as an indicator of perishability in a product. It is a measurement of the amount of available moisture and indicates how tightly water is bound, structurally or chemically, within a substance. This instrument uses a tuneable laser diode, is suitable for water activity measurement in samples within the range of aw 0.000-1.000, and is accurate to ± 0.005 at 25 ˚C.