The Pearl is much faster and more reliable than other liquid IR analysis accessories.
The Pearl Liquid Transmission Accessory has been designed to easily and quickly record highly repeatable IR spectral measurements for a wide variety of samples with high spectral resolution. Traditionally, a vertically mounted liquid cell, such as our Omni-cell, was used to record IR spectral measurements.
A liquid sample is contained between a pair of windows separated by a nominal thickness spacer and then tightened using four quick-release nuts. This obtained a reproducible pathlength as well as a leak-tight seal of the constructed liquid cell during its operation.
Since the Omni-cell is placed into the beam path of the IR spectrometer in a vertical orientation, the cell needs to be leak-proof. This also means air bubbles can form and interrupt measurements. This method can also consume a lot of your samples and the set-up is also time consuming. Most of the time is spent
on constructing the cell with a particular pathlength. By contrast, the Pearl liquid transmission accessory contains a horizontal liquid cell called the Oyster Cell that closes and opens like an Oyster!
A common top window is placed over an interchangeable bottom window, forming the horizontal cell with the sample sandwiched in the middle with a predetermined pathlength. Figure 1: The mechanism of the Oyster Cell Runny or volatile samples can be injected into the Oyster Cell via a special port near the window.
Viscous liquids and even greases can be spotted onto the lower (bottom) horizontal window surface, prior to the formation of the liquid cell.
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