Abstract: Method for mixing a plurality of specimens having different specific weights in an intermittent mixer with a receiving rotor which method includes filling partially at least one elongate container with the specimens, sealing the at least one elongate container, placing the at least one container in the intermittent mixer such that the bottom end of the at least one container contacts the receiving rotor, and rotating the at least one container with a vertical axle while the container is inclined such that the horizontal distance from the bottom end of the at least one container to the rotary axle is less than the distance from the top end of the container to the axle.

Abstract: Device for the continuous electrophoresis in a carrier free buffer current including a separating chamber, in which a separating space is located between two plane parallel glass plates held in a two-part frame and is separated from electrode chambers by permeable membranes. A dividing joint is provided between two frame-parts at least partially at an angle to a dividing plane of the frame located between and parallel to the glass plates. The membranes, when the frame-parts are pressed together along the dividing joint, are pressed against the surfaces of the frame-parts which form a part of the dividing joint, with a force component lying in the direction of the dividing plane, thus forming a seal. The separating chamber permits easy assembly and disassembly thereof.