An ultraviolet radiation transparent multi-assay plate for ultraviolet absorption spectroscopy of ultraviolet absorbing liquids comprising a plurality of cylinders fixed in a frame each covered at the bottom with a portion of an ultraviolet transparent sheet material sealed to the bottom wall of the...http://www.google.fr/patents/US5487872?utm_source=gb-gplus-shareBrevet US5487872 - Ultraviolet radiation transparent multi-assay plates