Optics: measuring and testing – Blood analysis – Hemoglobin concentration
Patent
1980-03-06
1981-12-15
Evans, F. L.
Optics: measuring and testing
Blood analysis
Hemoglobin concentration
356435, G01N 3348, G01N 2121
Patent
active
043056598
ABSTRACT:
Photometric apparatus and method for determining the absorbance ratio, in a sample, of two different wavelength lights. A first light is given a reference intensity and is passed through the sample. A second light is passed through the sample and its intensity is varied so that the intensity of the second light that has passed through the sample is equal to the intensity of the first light that has passed through the sample. When these intensities are equal, the intensity of the second light is detected in a state wherein it has not passed through the sample, resulting in an equivalent to the ratio of the absorbance in the sample of the second light and the first light.
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Bilstad Arnold C.
Brown Richard I.
Wicnienski Michael
Baxter Travenol Laboratories Inc.
Evans F. L.
Flattery Paul
Gerstman George
Ryan Daniel D.
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