Expert Speaker: Louis Fleck, Laboratory Manager, Trace Organic Analysis Group 10:00EST | 15:00 GMT | 20:30 IST 10 December 2026

USP <1663> provides detailed definitions for identification categories, including tentative, confident and confirmed.  Each level of identification requires a particular set of supporting evidence and consequently a particular level of effort.  This presentation will review the identification categories, provide context where tentative identification can be acceptable and discuss risks of incorrect or incomplete (tentative) identification. 

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