Luminometers with sample container displacement controlled by ra

Details Luminometers with sample container displacement controlled by ra Luminometers with sample container displacement controlled by ra

1991-01-22

1992-02-04

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2504581, 356244, G01N 1506

Patent

active

050862332

ABSTRACT:
A luminometer comprises a body which is formed with a bore for receiving a sample container and a cavity communicating with the lower end of the bore. A control device having a part-circumferential ramp is rotatable within the cavity for displacing the sample container along the bore to and from a test position in which the sample container is exposed to a photo-multiplier device. The control device is rotated by a cap which is coupled to the control device and which covers the upper end of the bore in light-tight manner as the control device lowers the sample container to the test position.

REFERENCES:
patent: 4291230 (1981-09-01), Heiss
patent: 4319842 (1982-03-01), Priarone et al.
patent: 4755055 (1988-07-01), Johnson et al.

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