You do not need to use 4-sided clear cuvettes to measure fluorescence with the SVIS-PL. A standard two-sided clear cuvette will work as long as the cuvette is ribbed and not frosted. The cuvettes that come with the SVIS-PL are ribbed and will work fine for this purpose. Just place the cuvette in the spectrometer as you would if you were measuring absorbance.
If you want to purchase 4-sided clear cuvettes you can get them from Perfector. See the link below.
We have tested two fluorometer cuvettes (catalog numbers 9012 and 9014). Both of these cuvettes work well.