Chemistry: physical processes – Physical processes – Crystallization
Patent
1977-02-15
1978-01-03
Reese, Robert M.
Chemistry: physical processes
Physical processes
Crystallization
23292, G01N 300
Patent
active
040664147
ABSTRACT:
A one piece tube and microscope slide manipulative laboratory device, for use in clinical procedures employing a liquid test specimen. The device is significantly characterized by a normally upright tubular reservoir which is structurally equivalent to a normal test tube, and particularly of the type used for specific gravity measurements in a urine analysis procedure. Frangibly connected to the lower end of the tubular reservoir is a microscope slide chamber, comprising closely spaced opposed planar walls of optically transparent material. The upper portion of the slide chamber is adapted for flow communication to the lower end of the superposed tubular reservoir. Between the microscope slide chamber, and the tubular reservoir, is a transition member having a bore to allow the flow communication between the reservoir and the slide chamber. The transition member is structurally adapted to act as a limiting constriction to the flow communication, whereby upon centrifugation of a urine sample, for example, heavier constituents will be collected in the slide chamber and thereby immediately available for microscope examination. Therefore, the device will function initially as a test tube, and allow any form of chemical analysis or specific gravity measurement to be initially made, and thereafter, upon a centrifugation, the microscope slide, containing heavier constituents of the specimen, may be simply frangibly detached and subjected to immediate further microscope or other form of optical analysis.
REFERENCES:
patent: 2664403 (1953-12-01), Weichselbaum
patent: 3415361 (1968-12-01), Adams, Jr. et al.
patent: 3750645 (1973-08-01), Bennett et al.
patent: 3914985 (1975-10-01), Von Behrens
Reese Robert M.
Semmes David H.
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