Apparatus for and method of optical absorbance and fluorescent r

Details Apparatus for and method of optical absorbance and fluorescent r Apparatus for and method of optical absorbance and fluorescent r

1981-09-28

1984-12-18

Evans, F. L.

Optics: measuring and testing

By shade or color

Fluid color transmission examination

250576, 356417, 356440, 356236, 356246, G01J 350, G01N 2164, G01N 2103

Patent

active

044888147

ABSTRACT:
Apparatus and method for biological fluid analysis involving radiation measurement. The apparatus includes a pipetting dispenser having means for directing radiation from the piston thereof generally axially through the liquid in the pipette tube such that the pipetting dispenser serves not only as a means for measuring and mixing liquids, but also serves as a cuvette. The apparatus and method provide maximum radiation path length to accommodate liquids of different optical density. Still another feature of the apparatus and method is the provision of means for removing liquid from the outer surface of a pipette tube, which means are readily adapted to automated procedures. The apparatus in one embodiment is adapted for absorbance measurement of analyte samples, and in another embodiment is adapted for measurement of fluorescent radiation from analyte samples.

REFERENCES:
patent: 2026267 (1935-12-01), Brandlin
patent: 2027518 (1936-01-01), Cornell et al.
patent: 2042255 (1936-05-01), Haas
patent: 2090427 (1937-08-01), Sample
patent: 3246559 (1966-04-01), Clifford, Jr.
patent: 3699348 (1972-10-01), Hocherl
patent: 3838926 (1974-10-01), Kato et al.
Levine et al., IBM Technical Disclosure Bulletin, vol. 18, No. 11, Apr. 1976, pp. 3754-3756.

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