An apparatus for photometrically scanning gels comprises a monochromator from which the light beam passes through a stop aperture and a gel placed in a cell, which are installed one after the other along the path of the light beam. The cell is caused to move relative to the light beam by means of a drive...http://www.google.fr/patents/US4534647?utm_source=gb-gplus-shareBrevet US4534647 - Apparatus for photometrically scanning gels
