Fluorometric analyzer including shutter means for simultaneously

Details Fluorometric analyzer including shutter means for simultaneously Fluorometric analyzer including shutter means for simultaneously

1979-03-07

1981-09-22

Smith, Alfred E.

Radiant energy

Luminophor irradiation

250461R, 356244, G01N 2138, G01J 158, G01N 2101

Patent

active

042912300

ABSTRACT:
A fluorometric analyzer includes a head assembly wherein the photomultiplier tube and excitation lamp of the analyzer are received in respective cavities and a transparent test cell is provided to receive a liquid sample. A first optical passage is provided between the lamp cavity and the test cell, and a second optical passage at right angles to the first optical passage is provided between the test cell and the photomultiplier tube cavity. A manually rotatable shutter assembly concentrically disposed about the test cell includes apertures for allowing light to pass through the optical passages when the shutter is rotated to a first position, and for simultaneously blocking the passage of light through the passageways when the shutter is rotated to a second position. Rotation of the shutter is limited by a first guide pin, and a second guide pin provides a desired degree of friction between the shutter assembly and the head assembly housing.

REFERENCES:
patent: 3610927 (1971-10-01), Hausser
patent: 3764214 (1973-10-01), Heiss
patent: 3917404 (1975-11-01), Heiss
patent: 4099920 (1978-07-01), Heiss
patent: 4213703 (1980-07-01), Haunold et al.
Strehler, "Adenasine-5'-triphosphate and Creatine Phosphate Determination with Luciferase", Methods of Enzymatic Analysis, Bergmeyer (editor), Academic Press, 1963, pp. 559-563.

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