Probe positioning device for a flask freeze drying

Details Probe positioning device for a flask freeze drying Probe positioning device for a flask freeze drying

1996-10-31

1997-11-25

Sollecito, John M.

Drying and gas or vapor contact with solids

Apparatus

Vacuum

215310, 215355, F26B 1330

Patent

active

056898959

ABSTRACT:
A device for positioning a probe, such as a temperature sensor, in a flask for freeze drying. The device includes a stopper adapted to be secured to an open end of the flask. The stopper has a center opening and at least one radial opening spaced from the center opening. The radial opening allows for fluid communication between inside and outside of the flask when the stopper is secured to the open end of the flask. The center opening receives a guide tube which extends into the flask and is sized to receive the probe such that substantially no fluid communication between the inside of the flask and the outside of the flask occurs through the guide tube or center opening. A channel formed in an upper surface of the stopper and an O-ring positioned about an outer diameter of a neck of the flask secure the probe in position relative to the guide tube. The multiple radial openings define an annular passageway which mimics fluid communication through a standard slit-type stopper employed in freeze drying.

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FTS Systems, Inc. product literature "Universal Product Sensor" available on or before Mar. 24, 1994.

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