Abstract: An electrocatalyst composition for use in an electrochemical fuel cell is disclosed. The electrocatalyst composition comprises (1) an electrocatalyst support comprising a carbon-containing species and at least one hydrogen peroxide and/or oxygen radical decomposition catalyst, and (2) a noble metal electrocatalyst supported on the electrocatalyst support. In addition, the at least one hydrogen peroxide and/or oxygen radical decomposition catalyst comprises transition metal inclusions within the electrocatalyst support, and the electrocatalyst support does not comprise any nitrogen-containing species or metal oxides.

Abstract: This invention concerns a photographic developing tank in which at least one of the end panels is removable and in which the cylindrical container includes at this end at least one slot or lug for the reception and the angular positioning of a sleeve of which the diameter corresponds to that of the container, this sleeve engaging between the container and the end panel.

Abstract: This invention concerns a light-tight photographic developing tank in which the end orifice opening onto the exterior of the body is orientated laterally to the axis of the tank and in which the orifice opening into the interior of the body is raised up above the lower generatrix of the cup disposed according to the axial plane of the cup which is perpendicular to the plane of the filling orifice opening onto the exterior of the cup.