04271123 is referenced by 63 patents and cites 6 patents.

A sample analyzer for quantitating relatively small amounts of clinically significant compounds in a liquid sample together with a sample mixing device (sampler) is disclosed. The analyzer has a transparent cell for holding the liquid sample. A light source focuses a stable light beam onto the sample so that fluorescent particles in the sample cause fluorescent emissions, the intensity of which is a function of the intensity of the light beam and the concentration of fluorescent particles in the sample. A detector in optical communication with the cell receives and senses photons forming the fluorescent emissions of the particles when excited by the light beam. The sampler holds a multiplicity of vials in an upright position in a row, advances the vials in incremental steps to present them at an aspiration station and includes an aspirator having a downwardly open suction tube that is vertically inserted into and withdrawn from the vials. A vacuum source withdraws the liquid sample from the vials through the suction tube and flows it to the sample cell in the analyzer. A mixer surrounds the suction tube and is activated before the sample is withdrawn form a uniform suspension.

Title
Automated system for performing fluorescent immunoassays
Application Number
6/87275
Publication Number
4271123
Application Date
October 22, 1979
Publication Date
June 2, 1981
Inventor
Eric D Schwartz
Richmond
CA, US
Michael G Simonsen
San Rafael
CA, US
Robert E Curry
Novato
CA, US
Agent
Townsend and Townsend
Assignee
Bio Rad Laboratories
CA, US
IPC
G01N 33/54
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