摘要:
A method and apparatus is provided for holding first material along with less dense material in substantially separate layers and for effecting removal of at least some of the second material to a location displaced from the layer. The materials are arranged in the two layers with the first material at the bottom of a vessel and with the second material disposed above the first material. An elongate withdrawal conduit projects into the vessel to define (1) an exit port at the wall of the vessel, (2) a confined flow passageway communicating with the exit port within the vessel, and (3) at least one withdrawal aperture with the uppermost portion of any withdrawal aperture being lower than the uppermost portion of the exit port. The upper surface of the first material layer is maintained below the conduit while flow of the second material from the second material layer is effected into and through the conduit via the withdrawal aperture.
摘要:
A process for the separation of X sperm and Y sperm by phenotypic differences in a gravity separation process wherein an osmolality gradient is provided within the separation vessel, the osmolality preferably being in inverse relationship to the density gradient.
摘要:
Separation of a mixture of non-magnetic particles on the basis of their different densities is accomplished by levitation in a magnetic fluid using a multiplicity of magnetic gaps created by a grid of magnetic poles oriented with respect to each other such that the polarity of the magnetic field generated in each gap is opposite to that of each adjacent gap.