Colony Counters & Inhibition Zone
Gas burners & Accessories
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Rapid Microbiological Methods
Water Activity Measurements
The DWS Hypoxyworkstations are ideal for cell and tissue culture researchers who like to accurately control oxygen, carbon dioxide, temperature and humidity.
Zone of inhibition measurement
Sample bags and holders
Live Cell Imaging and Fluorescence Microscopy
Automated Cell Imagers
Cell Culture Analyzer
Impedance based cell monitoring
Live Cell Imaging
Rapid DNA typing
3-D cell culture
Automated Cell Imagers
Equipment for Bioreactors
Filtration and Chromatography
High-Pressure Protein Digestion
High-Pressure Cell Disruption
Online Measurement of Biomass
Manufacturer: Decagon Devices Inc.
Benchtop Water Activity Meter
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 0.003 aw specifications.
- Fast - water activity readings in about 2 minutes
- Accurate: ±0.003 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 ±0.003 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.Request product info