Device to alternately supply a fluid to an analyzer

Details Device to alternately supply a fluid to an analyzer Device to alternately supply a fluid to an analyzer

2007-07-24

2007-07-24

Gordon, Brian R. (Department: 1743)

Chemistry: analytical and immunological testing

Including sample preparation

Volumetric liquid transfer

C436S043000, C436S062000, C436S146000, C436S008000, C422S051000, C422S068100, C422S079000, C073S864740, C073S864860

Reexamination Certificate

active

10352516

ABSTRACT:
Apparatus and methods for supplying a portion of a fluid stream and, alternately, a fluid of known composition and concentration to an analyzer are provided. The fluid stream is directed through a series of connected chambers formed in an integral housing. A sampling needle has an inlet in one of the chambers and an outlet in fluid communication with the analyzer. When desired, a tube or vial containing a known fluid may be inserted into a chamber containing the sampling needle, so that the known fluid will be supplied to the analyzer. A second needle provides ventilation to the vial to prevent the formation of a vacuum as the known fluid is drained from the vial.

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