AquaLab DUO
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WATER ACTIVITY PLUS Moisture Content using the Dewpoint Method 10x more precise; half the operating cost. quaLab Series 4 DUO uses the “dewpoint method” to measure moisture content and water activity with the same instrument. The result: complete moisture analysis in about 5 minutes with some big advantages over traditional moisture meters. Both moisture content and water activity are critical quality measures in powdered and granular products like spices. How It Works The dewpoint method doesn’t use chemicals or high temperatures. Using it is as easy as sealing a lid over a sample and waiting for vapor equilibrium. Inside the instrument, an infrared beam focused on a tiny mirror determines the precise dewpoint temperature of the sample. That dewpoint temperature is then translated into moisture content and water activity readings. Because the instrument is lightweight, portable, and easy to use, it puts precision moisture content readings in the hands of virtually anyone on the production line or in the supply chain. 10X the Precision Precision varies with the product tested, but for many products dewpoint moisture content has 10x the precision of a typical moisture meter. Testable Accuracy Standardization issues have often made moisture content more opinion than fact. As one manufacturer said, “My suppliers quote me what the moisture content was when the ingredient shipped. That number’s meaningless. They can say whatever they want because we don’t have reliable standards to measure against.” The dewpoint method lets you validate moisture content readings with independently verifiable salt standards. DUO stores time, date, and user information with every calibration and measurement, and includes administrator passwords and access restrictions so you can ensure the integrity of your data. Half the Cost The Dewpoint method’s precision puts it in the same class with high-end moisture methods like Karl Fischer Titration. But even compared with more common moisture balances, DUO costs less to run. For example, if you run 20 samples a day, you’ll spend $1,598 on supplies (cups and standards) for DUO. At that same rate, you would spend $4,560 for weighing pans for a moisture meter. DUO’S “DEWPOINT” MOISTURE CONTENT METHOD Odor-free. No oven. Chemical-free. Precise—Reduces error by up to 90%. Verifiable with independent salt standards. Repeatable. Green—Uses 95% less energy. Portable—the meter weighs just 7 pounds. Easy to use—precise measurements with minimal training. Secure—offers administrative control over calibration and sample data. Complete moisture analysis: both moisture content and water activity. 2365 NE Hopkins Court Pullman, Washington 99163 1-8

Specifications Sensor Types Data Interface Percent moisture and water activity. Results Displayed a. Chilled-mirror dewpoint. b. Infrared temperature. Temperature Control RS232A compatible, 8-data bit ASCII code, 9600 baud, no parity, 1 stop bit, cable included. Case Dimensions Range 0.10 to 0.95 Temperature Stability User-selectable range, internal thermoelectric controlled. Moisture Content Precision Case Material Test Result Memory Agreement to Moisture Content Reference Method ± 0.1% to ± 0.5% 10,000 readings (each reading includes water activity, moisture content, temperature, time,...