Water Activity Science DA7200 for Water Activity New NIR approach to fast water activity measurement. DA7200 utilizes NIR spectroscopy to determine the activity of the water in the sample. A7200 measures water activity by shining a bright light on a sample and collecting the reflected spectrum of light. Reflected light from a sample is characteristic of the composition of that sample. In other words, a sample with a water activity of 0.300 will reflect light differently than a sample with a water activity of 0.320. DA7200 measures this reflected light and converts it to water activity values using specialized software. Since there is no measurement of the air above the sample, no equilibration time is needed. In addition, because the method of detection travels at the speed of light along a fiber-optic cable, the time for a water activity measurement is almost instantaneous. DA7200 requires a product specific calibration. Once programed, the water activity of your product is measured with the touch of a button. No equilibration necessary. DECAGON DEVICES 950 NE Nelson Court Pullman, Washington 99163

Water Activity Science Reference Ceramic Automatic Rapid Analysis of Water Activity Operating Platform Windows XP, Touch Screen Easy Sample Presentation Wavelength Stability < 0.2 nm/year Communication Ports 2 x USB, 1 x Parallel, 1 x LAN, 1 x Keybord, 1 x Mouse, 1 x External Monitor Non-Contact and Non-Destructive Analysis Non-Moving Optics. Detector T.E. cooled 256 elements InGaAs. Internal Line Source Reference Wavelength Range 950 – 1650 nm Wavelength Accuracy < 0.3 nm Data/Spectral Collection Rate Approx. 100 spectra/second Noise < 0.00006 AU over 3s measuring time Optics F/3 Dimensions...