Abstract: A cassette for use in a centrifugal counter-current distribution chromatographic apparatus which comprises a motor-driven rotor supported for rotation about a shaft having at least one pocket defined therein, and at least one cassette having a tortuous separation passage defined therein with the opposite ends adapted to be connected respectively to a source of fluid samples and the outside, the fluid samples being continuously supplied to the separation passage while the rotor is driven in one direction at high speed to effect the counter-current distribution.

Abstract: A cassette for use in a centrifugal counter-current distribution chromatographic apparatus which comprises a motor-driven rotor supported for rotation about a shaft having at least one pocket defined therein, and at least one cassette having a tortuous separation passage defined therein with the opposite ends adapted to be connected respectively to a source of fluid samples and the outside, the fluid samles being continuously supplied to the separation passage while the rotor is driven in one direction at high speed to effect the counter-current distribution.

Abstract: An improved rotary joint including first, second and third joint portions, and so arranged to connect two flow passages to each other respectively at the rotary unit side and stationary side so as to continuously effect, for example, centrifugal counter-current distribution work.

Abstract: A hemolysis reaction measuring device includes a hemolysis reacting member made of a light transmitting material and adapted to cause hemolysis reaction to take place therein, a light source supported so as to be able to project light toward a side portion of the hemolysis reacting member, and a light receiving member which allows the light emitted from the light source and passing through the hemolysis reacting member to be incident upon it so as to measure light absorbance of a liquid within the hemolysis reacting member based on the intensity of the incident light. The light source is formed by a light emitting diode.

Abstract: An apparatus for counting numbers of microscopic corpuscles such as blood cells, comprising an optical system, a driving mechanism, a photoelectrical convertor means and a counter means. The optical means is adapted to illuminate a sample containing the corpuscles so as to irradiate magnified images onto a charge coupled device (CCD) as the convertor means having elements lined up in a row in an X-direction perpendicular to a Y-direction in which the sample is moved by the driving mechanism whereby X-directional scanning is automatically executed by the CCD without moving the sample while Y-directional scanning is conducted with a sample holder continuously moved by said mechanism comprising a drive motor and a cooperating spring. The CCD is adapted to detect the number of corpuscle images contained in each scanning line in the X-direction and thereby to produce electric signals fed to the counter means, which comprises electronic circuits for summing up these signals in respect of Y-direction.

Abstract: A method of and an appliance for use in testing the osmotic fragility of blood cells by the use of the CPC method involving a coil column containing an aqueous solution of a salt mixed with one or both of a viscosity modifier and a hemolysis promotor. This coil column, after the blood to be tested has been injected, is centrifuged while undergoing a planetary motion to cause the blood cells to undergo hemolysis. After this hemolysis, a hematological pattern is developed in the coil column, the position of the coil column at which such hematological pattern has been developed being indicative of the osmotic fragility of the subject blood.