The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 19, 1989
Filed:
Jan. 06, 1988
Applicant:
Inventor:
David T Bach, Westborough, MA (US);
Assignee:
Amoco Corporation, Chicago, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
356 73 ; 2504581 ; 356318 ; 356417 ; 356440 ;
Abstract
An apparatus and method are disclosed for measuring the fluorescence and absorbance of a liquid sample. A sample tube is provided that has an external surface and a bore therethrough for containing a sample fluid. A cladding fluid coats the bore of the sample tube to provide a smooth surface adjacent to the sample fluid. Excitation radiation is directed along the bore and detector means are provided to detect the excitation radiation, fluorescent radiation, and non-absorbed radiation. Comparator means compare the signals from the presence and concentration of various constituents in the liquid sample.