Temperature control and stirring apparatus for luminescence meas

Details Temperature control and stirring apparatus for luminescence meas Temperature control and stirring apparatus for luminescence meas

1977-03-17

1978-07-11

Reese, Robert M.

Chemistry: physical processes

Physical processes

Crystallization

356244, G01N 2124

Patent

active

040999203

ABSTRACT:
The apparatus is incorporated in a photometer utilized for measuring luminescence from a liquid sample containing adenosine triphosphate (ATP) and includes a cavity in a rotatable sample tube carrier inside a reaction chamber of the photometer and ports in the wall of the carrier communicating with the cavity, the ports being connected via tubing to a constant temperature liquid circulation system. The apparatus also includes a mechanism for rotating a sample tube received in the sample tube carrier when the sample tube carrier is rotated from a position outside the chamber to a position within the reaction chamber where a reagent can be inserted into the tube. The rotating mechanism provides for thorough stirring and mixing of the liquid contents of the sample tube and includes a rotatable journaled socket member at the bottom of the opening in the carrier for receiving the sample tube. This socket member has a friction surface in a socket cavity thereof for engaging and holding the sample tube in place and a friction surface on the exterior thereof which engages a rotatably driven shaft when the tube is moved to the position within the reaction chamber for receiving a reagent.

REFERENCES:
patent: 2878106 (1959-03-01), Malmstadt
patent: 3764214 (1973-10-01), Heiss
patent: 3790346 (1974-02-01), Ritchie
patent: 3917404 (1975-11-01), Heiss

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