Measure the water activity of any sample with the first water activity sensor completely unaffected by volatiles. Anyone, from a technician in the lab to an operator at the line, can measure water activity in 5 minutes or less to 0.005 aw specifications.
Fast - water activity readings in about 2 minutes
Accurate: ±0.005 aw
Accurately read any sample, including those with volatiles
Verifiable with independent salt standards
Repeatable - different users, different locations, same result
Portable - weighs just 7 pounds
Easy to use - precise aw readings with minimal training
Secure - offers administrative control over calibration and data
How It Works
Put a 7.5 ml product sample in a disposable cup, seal the sample chamber lid over the sample, and wait for vapor equilibrium. At equilibrium, the relative humidity of the air in the sample chamber is equal to the water activity of the sample.
Tunable Diode Laser Sensor
The TDL's sensor measures the relative humidity of the air in the sample chamber by emitting a finely-tuned infrared laser beam across the headspace above the sample. Because water vapor has strong absorption bands in the near infrared (NIR), the sensor can measure the presence of water vapor in the headspace very precisely.
Use the TDL to get lab-quality water activity measurements at the line, receiving dock, processing plant, storage facility-anywhere you need to test and verify the safety and quality of your products and ingredients.
Unaffected by Volatiles
The beam of the laser, which is less than one nanometer wide, is specific for the commonly occurring isotope of water. Other vapor molecules, even those from different isotopes of water, do not affect the reading.
Read Any Sample
The sensor is powerful enough to measure the water activity of previously impossible to measure samples, including soy sauce, ethanol, even gasoline.
Speed and Accuracy
Measure water activity of any sample in 5 minutes or less (average read time 2 minutes) with ±0.005 aw accuracy. The AquaLab TDL is the fastest, most precise water activity meter available.
Use (Almost) Anywhere
Water activity is temperature dependent. Internal temperature control lets you set a measuring temperature between 15° and 50° and use the instrument anywhere--even outside a climate-controlled facility.
Robust, Easy to Clean
The sensor has no moving parts, and is housed in fully-sealed sample chamber. The clamshell lid offers easy access to all parts of the sample chamber for cleaning.
AquaLab TDL stores time, date, and user information with every measurement and calibration, and can store up to 8,000 secure data points. Set up to 25 unique users and passwords to control access to data.
Use available AquaLink software to maintain compliance records and archives, do statistical analysis, and print reports for customers and decision-makers.
Visit wateractivity.com to see how water activity can keep your products safe and your process lean.
ecagon Devices, Inc. - Makers of the AquaLab Line of Products
Decagon designs, manufactures, and markets scientific instruments. The AquaLab division focuses on measuring total moisture (water activity, moisture content, and moisture sorption isotherms) in foods, pharmaceuticals, and other products.
Decagon's instruments are used by more than 80% of the top 100 foods companies. They're also used by pet food manufacturers, pharmaceutical companies, universities, government agencies, research and testing labs, and in other industrial applications.
When Decagon was founded in 1983, water activity was still an emerging concept in the food industry. Now most companies measure water activity to assure the safety and quality of their products. The speed and accuracy of the AquaLab series of water activity meters has become an industry standard.
Interesting Decagon Facts:
Decagon has done many novel water activity projects for manufacturers, including measuring the water activity of cupric oxide in air bags and determining the moisture content of plastic pellets.
Decagon got a peek into military life when the Department of Defense Combat Feeding Program used water activity to make sandwiches with a three-year shelf-life for MREs.
Decagon also makes instruments for environmental research. (Visit our environmental science division at www.decagon.com).
Decagon built a thermal and electrical conductivity probe for NASA's Phoenix Scout Lander mission to Mars. The probe successfully gathered thermal and electrical properties data in addition to measuring atmospheric humidity and wind speed.
Decagon is located in Pullman, Washington, home of Washington State University.
Quality Management at Decagon
In order to provide timely feedback to the high volume of vendor surveys and evaluation requests Decagon Devices, Inc. receives, Decagon has created a Quality Survey Response for our customers. We have designed this response to fit the majority of the questions we are asked in regards to our Quality Management System, ISO9001:2008 registration and calibration services.