Sample liquid aspiration and dispensing probe

Details Sample liquid aspiration and dispensing probe Sample liquid aspiration and dispensing probe

1994-08-31

1997-06-17

Warden, Jill

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

7386401, 7386423, 7386425, 604165, 422 99, B01L 302

Patent

active

056394268

ABSTRACT:
The sample liquid aspirating and dispensing probe includes a tubular plastic inner member and a tubular metallic outer member. One or more sections of the plastic inner member are drawn-down in dies to provide a large diameter section, a small diameter section and an intermediate transition section. The plastic member is inserted in the metal member and annealed to conform the profile of the plastic member transition section with a streamlined transition section of the metal outer member. The dual member probe has an ultra-smooth interior surface, substantially free of eddy-forming imperfections. Thus there is minimal likelihood of turbulent eddies forming when rinse liquid is directed through the probe. The metallic member provides the probe with a conductive capability for capacitive liquid level sensing.

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