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The
Edinburgh Instruments integrating sphere is an accessory
for the measurement of fluorescence quantum yields. It
is 150mm in diameter and has its inner surface coated
with Barium Sulphate (BaSO4) to enable
efficient scattering of light over a wide wavelength
range.
The
sphere has 2 perpendicular ports, one to allow the
excitation beam into the sphere and one to collect a
portion of the light scattering off the sphere surface
and direct it into the emission arm of the spectrometer.
It fits directly in the sample chamber of the FLS920
spectrometer series where the regular sample holder is
normally placed. The integrating sphere is shown below
on the left and the placement within the spectrometer is
shown on the right.
With the integrating sphere the measurement of
fluorescence quantum yield by an absolute method is
possible. A cuvette holder for both direct and indirect
excitation is provided to enable correction for
re-absorption of scattered excitation light.
For the latest information please contact
sales@edinst.com
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