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CRAIC Technologies quartz
slides, quartz wellslides and quartz coverslips are
spectral grade and manufactured to the highest
levels of quality.
Quartz slides and
quartz coverslips are commonly used
in UV-visible microspectroscopy and microscopy. This is because common glass slides and coverslips
absorb UV light resulting in
very little
transmission below 340 nm. Quartz, on the
other hand, transmits UV light with much greater efficiencies.However,
all quartz is not equal. As with anything, there are various grades and
specifications. The most common quartz slides and coverslips use lower grade
materials as they are not designed for
deep UV microspectroscopy or
microscopy. However, a spectroscopist needs all the UV light they can get... especially in the deep
ultraviolet region where many materials exhibit some very unique features.
To the left
is the
transmittance spectra of CRAIC spectral grade quartz and quartz commonly used in
microscope slides and coverslips. The purple line represents the type of quartz
that is most commonly used to manufacture quartz slides and quartz coverslips. As is
obvious, there is a dramatic drop in UV transmission of this material below 265
nm. This is one of the reasons so many scientists have difficulty with UV
microspectroscopy between 200 to 265 nm when not using CRAIC quartz slides.
The red line represents the
optical grade quartz used by CRAIC Technologies in their quartz slides and
quartz coverslips.
The amount of UV transmitted is over 85% down to 200 nm.
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