The Pearl™ is a high-performance liquid transmission accessory designed for near and mid-infrared laboratory spectroscopy. It incorporates Specac’s innovative Oyster Cell assembly, which holds samples in a horizontal plane, enabling rapid and easy sample application and cleaning, thereby significantly enhancing sample throughput.
The accessory allows for highly reproducible pathlengths with an accuracy within 1 μm when assembling and disassembling the Oyster Cell. Interchangeable ZnSe or CaF2 windows are available in six pathlengths ranging from 25 to 1000 μm. Both wedged and parallel window options are offered to optimize spectral quality depending on measurement requirements.




The Pearl™ is a high-performance liquid transmission accessory designed for near and mid-infrared laboratory spectroscopy. It incorporates Specac’s innovative Oyster Cell assembly, which holds samples in a horizontal plane, enabling rapid and easy sample application and cleaning, thereby significantly enhancing sample throughput.
The accessory allows for highly reproducible pathlengths with an accuracy within 1 μm when assembling and disassembling the Oyster Cell. Interchangeable ZnSe or CaF2 windows are available in six pathlengths ranging from 25 to 1000 μm. Both wedged and parallel window options are offered to optimize spectral quality depending on measurement requirements.