Actually, if I understand "spectrophotofluorometer" correctly.. The device in question is a fluorescence soectrometer, which does not tell you the concentration of a colored species in solution. A fluorescence spectrophotometer measures emission, not absorption/transmittance. Such a thing probably is not of a whole lot of use for like, determining the identity of an unknown substance, unless the substance you're looking for fluoresces, and you know what its emission spectrum looks like..
-SpicyBrown