Spectrometer for conducting turbidimetric and colormetric measur

Details Spectrometer for conducting turbidimetric and colormetric measur Spectrometer for conducting turbidimetric and colormetric measur

1991-10-31

1994-04-19

McGraw, Vincent P.

Optics: measuring and testing

For light transmission or absorption

By comparison

356414, 250575, G01N 2100, G01N 2127

Patent

active

053050932

ABSTRACT:
A dual beam spectrometer for conducting both turbidimetric and colormetric measurements includes a housing with a light source. The housing further includes source exit apertures that form light from the light source into a sample light beam and reference light beam. A sample cartridge for containing sample material to be measured is mounted in the housing in the path of the sample light beam. The spectrometer also includes a detector assembly for detecting the sample light beam and the reference light beam. The detector assembly includes a first detector that senses or detects sample light beam and a second detector that senses or detects the reference light beam. A sample light beam detection aperture tube is positioned in the housing between the sample cartridge and the first detector. Similarly, a reference light beam detection aperture tube is positioned between the sample cartridge and the second detector.

REFERENCES:
patent: 4042304 (1977-08-01), Martin et al.
patent: 4171909 (1979-10-01), Kramer et al.
patent: 4678325 (1987-07-01), Lehtikoski et al.
"HbAlc ASAP", DCA 2000 Analyzer pp. 1-4, 1989.
Korn et al., "Double Beam Vacuum Ultraviolet Spectrometer and Logarithmic Radiometer," Applied Optics, vol. 111, #3, pp. 517-520.

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