Photometric method for determining courses of reactions

Details Photometric method for determining courses of reactions Photometric method for determining courses of reactions

1981-02-13

1985-01-08

Arnold, Bruce Y.

Optics: measuring and testing

Blood analysis

73 641, 356339, 356342, 356436, G01N 3348

Patent

active

044924623

ABSTRACT:
The invention provides a photometric method of determining courses of reaction in a specimen, in which method the intensities of the transmitted light and of the stray light are measured, wherein the two intensities are measured simultaneously and the electrical signals corresponding to the transmitted light and to the stray light are combined to form one signal. The invention makes it possible to perform reliable measurement even with low levels of transmitted and stray light.
The method is preferably used in determining the coagulation times of blood. Apparatus for carrying out the method is also disclosed.

REFERENCES:
patent: 3027461 (1962-03-01), Kavanagh
patent: 3518437 (1970-06-01), Riggs
patent: 3658480 (1972-04-01), Kane et al.
patent: 3680962 (1972-08-01), Hayakawa
patent: 3746869 (1973-07-01), Lindstedt et al.
patent: 3785735 (1974-01-01), Friedman et al.
patent: 4193692 (1980-03-01), Wynn
patent: 4252536 (1981-02-01), Kishimoto et al.

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