Chemistry: analytical and immunological testing – Including sample preparation – Dilution
Patent
1996-05-02
1998-06-30
Le, Long V.
Chemistry: analytical and immunological testing
Including sample preparation
Dilution
436 54, 436174, 436180, 422 81, 422100, 7386411, 7386412, 7386422, G01N 114, B01L 302
Patent
active
057733058
ABSTRACT:
The method of diluting a fluid sample for analysis in a sample analysis system includes the provision of an aspiration probe with two interior sections. The first interior section of the probe has a first diameter and is proximate the aspiration opening of the probe. The second interior section of the probe has a second diameter of greater magnitude than the first diameter and is located distally of the first section. The probe aspirates in consecutive order selected amounts of fluid sample and diluent into the first interior section of the probe. The fluid sample and diluent are mixed in the second interior section of the probe by moving the sample and diluent back and forth in the second interior section a predetermined number of times. The back and forth movement of diluent and fluid sample in the second interior section of the probe provides substantially uniform mixing of the sample and diluent. The use of a Teflon.RTM. probe coated with fluorocarbon oil eliminates the risk of cross-contaminating the sources of fluid sample and diluent.
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Gherson Paul
Zabetakis George E.
Bayer Corp.
Le Long V.
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