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The BPI® Dual
Spectrometer™ covers wavelengths from 350nm to 710nm with a resolution of
better than 10nm.
The spectrum results may be
used for general analysis of transparent, translucent or reflective
samples. Or it could be used for quality control purposes, such as
comparing paint samples or colored liquids. The unit has a 10mm cuvet
holder. The cuvet holder can be removed so that non-transparent samples
can be analyzed. A reflection screen can be slid in place for calibration
purposes.
The unit is a free-standing spectrometer with light sources that can also
be attached to a PC via the computer's RS232 port. The supplied software
requires Microsoft™ Windows™. The test results can be saved to an
integrated database and also can be printed out to any compatible printer.
The BPI® Dual Spectrometer™ provides information on the visible
transmittance (Tv) as well as the UVA transmittance of the material being
tested along with the numerical color characteristics. (L*, a*, and b*).
This provides a means for numerical color description. L*, a* and b* are
the familiar CIELAB coordinates. L* is brightness (or lightness) ranging
from 0 (black) to 100 (white). The a* value goes from about -80 (green) to
+100 (red), while the b* value goes from about -80 (blue) to +100
(yellow). The PC software displays a transmission curve and allows one
curve to be overlaid upon another.
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