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Priority claimed from DE19742422129external-prioritypatent/DE2422129C3/de
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Publication of JPS50156491ApublicationCriticalpatent/JPS50156491A/ja
Publication of JPS5740968B2publicationCriticalpatent/JPS5740968B2/ja
G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
G01N15/10—Investigating individual particles
G01N15/1031—Investigating individual particles by measuring electrical or magnetic effects
G01N15/12—Investigating individual particles by measuring electrical or magnetic effects by observing changes in resistance or impedance across apertures when traversed by individual particles, e.g. by using the Coulter principle