AQUALAB® TDL 2 Water Activity Meter For Volatile Samples

Measuring water activity in samples like sauces, dressings, tobacco, spices, or teas has always been challenging. The reason for this difficulty is the presence of volatile compounds that interfere with sensors like chilled mirrors and capacitance. 

However, experts in water activity have developed an instrument called the TDL (tunable laser diode) to address this issue. The TDL uses a laser sensor that accurately measures even the most challenging volatiles. It's easy to use and takes only a few minutes to measure any sample, including soy sauce, pure alcohol, gasoline, and tobacco. The TDL is the only sensor recommended by CORESTA for accurately measuring water activity in tobacco products. Customers and third-party scientists alike trust it, delivering readings that can be completely relied upon no matter the sample. 

The TDL uses a laser tuned to the absorption band of water, which means it can measure water activity with unmatched precision even when volatiles are present. The laser beam, less than one nanometer wide, can locate water molecules irrespective of the concentration of volatiles and can accurately measure the water activity of pure alcohol as well. 

Despite its complexity, the TDL is easy to use. Its sensor has no moving parts and is housed in a fully sealed sample chamber. It doesn't require user calibration, and it only takes five minutes to measure most samples. This is a significant time saving compared to other instruments that can take almost an hour, making the TDL an ideal solution for quicker quality measurements no matter what ingredients are in your sample. With its laser accuracy, low-maintenance usage, and fast size, the TDL is the perfect tool for measuring water activity in previously difficult-to-measure samples.