Sampling Devices for Viscous Liquids

Samples such as gels or other substances as viscous as chocolate syrup or ketchup are very difficult to measure with near-infrared equipment. Thin flow-through cells exhibit resistance to pumping fluids containing high levels of particulate matter. Some liquids may even separate under the pumping conditions. Middleton Research has developed a transflectance cell for near-infrared analyzers. The cell is easy to open, close, and clean, and it has a calibrated, reproducible 0.3 to 0.5 mm optical pathlength (the physical film thickness is half of the optical path).

For samples of even greater density, the Transflectance Paste Cell will allow the measurement of samples previously thought to be too viscous to measure. Like the liquid cell, the paste cell allows for easy application and cleaning as well as a repeatable pathlength.

For more information, please download the product sheets or contact us.

Liquid Cell Product Sheet

Paste Cell Product Sheet