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:
Feb. 14, 2006
Filed:
May. 01, 2003
Anthony Gilby, Foxborough, MA (US);
Andrew Simon Craze, Thame, GB;
Anthony Gilby, Foxborough, MA (US);
Andrew Simon Craze, Thame, GB;
Waters Corporation, Milford, MA (US);
Abstract
A method and apparatus for controlling fraction collection in an eluent stream flowing from an LC column. A triggering detector recognizes the presence of a target substance according to characteristics of chromatographic peaks in the eluent stream and initiates a delay timer to trigger the fraction collector. A waste stream detector is disposed at any distance from the fraction collector to detect peaks in the waste stream flowing from a fraction collector. The signature of fraction collector actuation is seen by the waste stream detector, permitting the delay time to be adjusted for optimal collection of the target compound. The presence or absence of a peak or the characteristics of a remnant peak detected by the waste stream detector are used to confirm that the target component of the eluent stream was collected as intended by the fraction collector.