Biochemical analysis method

Details Biochemical analysis method Biochemical analysis method

1991-04-03

1992-03-17

Warden, Robert J.

Chemistry: analytical and immunological testing

Automated chemical analysis

Utilizing a moving indicator strip or tape

422 66, 422 67, 436165, 356440, G01N 3500

Patent

active

050968289

ABSTRACT:
A biochemical analysis method comprises the steps of accommodating a long test film in a refrigerator, repeatedly pulling the long test film out of the refrigerator until a sample-applying portion, i.e., the next unused portion of the test film, is aligned with a sample applying position, applying a liquid samples onto the sample-applying portions of the long test film at which time the sample-applying portions become sample-applied portions, incubating the sample-applied portions, and irradiating light to the sample-applied portions in order to determine optical densities, which depend on the how much of a certain constituent in a liquid sample existed and therefore reacted with a reagent in a reagent layer of the test film. The length of a sample-applying portion to which a present sample will be applied, is changed in accordance with conditions which exist after the analysis of the sample applied to the test film immediately prior to the present sample has been finished. Alternatively, nearly the whole sample-applying portion that was positioned upstream from the sample-applied portion is pulled back into the refrigerator after the above mentioned measurement of the optical density is completed, and is pulled out prior to the next application of a sample so that the sample-applying portion positioned in the refrigerator is brought to the sample applying position.

REFERENCES:
patent: 3526480 (1970-09-01), Findl et al.
patent: 3904369 (1975-09-01), Alder et al.
patent: 3992158 (1976-11-01), Przybylowicz et al.
patent: 4863693 (1989-09-01), Howell

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