Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing liquid or solid sample
Patent
1986-09-09
1988-10-18
Richman, Barry S.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing liquid or solid sample
324 714, 377 11, G06M 1104
Patent
active
047786574
ABSTRACT:
An apparatus for determining various characteristics of particles suspended in a liquid, e.g., the deformability or other values of red blood corpuscles. The particles are transported by a method similar to the Coulter method through a measuring channel having sections which are constricted or widened over the length of the measuring channel in, e.g., a foil. The change of certain electrical characteristics of the liquid is measured during passage of each particle, which furnishes a measure of the desired particle characteristics. The volume, as well as the deformability and other characteristics, of a particle can be determined during one passage through one and the same measuring channel. This is accomplished by forming a measuring channel composed of alternate constricted and widened portions in a step-like configuration which are a plurality of cylindrical channel sections, throughout the length of the channel. The cross-sections of the widened portions are larger than the cross-section of the particles to be examined, while the cross-section of the narrowed portions are smaller than the cross-sections of the particles.
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patent: 3845386 (1974-10-01), Davies et al.
patent: 3890568 (1975-06-01), Coulter et al.
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patent: 4420720 (1983-12-01), Newton et al.
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patent: 4525666 (1985-06-01), Groves
Johnston Jill
Kernforschungszentrum Karlsruhe GmbH
Richman Barry S.
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