For effective measurement of reflection in powders and thick fluids, Avantes offers this specially designed this series of reflection probes. The probes allow the user to simply dip the probe into the powder or thick fluids to do the measurements.
The illumination leg of the probe is connected to a light source and carries light to the sample via a bundle of six fibers. At the probe tip, a 45 degree sapphire window illuminates the sample and collects the indirect reflections which are carried by a single fiber to the spectrometer. The 45 degree angle of the probe prevents the measurements of direct back reflection from the window, thus improving the dynamic range of your measurement.
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