Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Content or effect of a constituent of a liquid mixture
Reexamination Certificate
2005-04-05
2005-04-05
Fox, John (Department: 3753)
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Content or effect of a constituent of a liquid mixture
C073S863720
Reexamination Certificate
active
06874354
ABSTRACT:
The sample injection valve for high-performance liquid chromatography (HPLC) devices comprises a stator with inlets for the sample and the mobile phase, outlets leading to the chromatography column and to a waste collector, as well as connections for both ends of a sample loop. Its rotor has the customary connection channels. An additional washing liquid inlet (7) opens into the connecting channel (9) that, in one valve position, connects the sample inlet (1) to the outlet (2) leading to the waste collector. This enables the sample inlet and the pipette or syringe located therein to be rinsed.
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patent: 6012487 (2000-01-01), Hauck
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patent: 0360604 (1990-03-01), None
Cueni Hansjörg
Scherrer Heinrich
CTC Analytics AG
Fox John
Ladas & Parry LLP
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