The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 21, 1995
Filed:
Jun. 14, 1993
Robert W Holt, Hackettstown, NJ (US);
Thomas Palmieri, Paramus, NJ (US);
Cirrus Diagnostics, Inc., Chester, NJ (US);
Abstract
An improved pipette probe in an automated chemical analysis system is provided, along with a pipette tip wash protocol to reduce carryover. The pipette tip comprises an elongated stainless-steel barrel which houses a polytetrafluoroethylene tube. The non-wettable properties of polytetrafluoroethylene inhibit fluid adhesion and thereby reduce carryover. The pipette tip is swaged at a fluid dispensing end to a restrictive diameter for good pipetting precision and accuracy. A novel wash protocol is also provided which includes a novel wash solution comprising quantities of Triton X-100 nonionic detergent, Diethanolamine, and NaCl.