[en] Fluorescence of the complexes Eu-EDTA (ethylene diamine tetraacetic acid) is studied from 77 K to 373 K. The method proves to be particularly well suited for exciting fluorescence with laser (continuous or pulsed) because of the geometry of the laser beam. It is proposed to attribute the two kinds of spectra observed to the two complexes 1Eu/1EDTA and 1Eu/2EDTA the proportion of which vary with temperature, pH and the overall solution composition. Results are obtained for Eu³⁺ concentrations ranging from 0.15 to 0.04 M with a spectral resolution of 1 A necessary to isolate the two ⁵D₀ → ⁷F₀ components. Finally we try to estimate if the use of optical fibers in collecting lanthanide luminescence is suitable for other solutions such as complexes with biological compounds