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  Home > JCE Print > Journal of Chemical Education > Issues > 1996  > July  >
Laboratory Experiments
A Consistent System for Coding Laboratory Samples
John C. Sih
Chemical Process Research and Development, Pharmacia and Upjohn Company, Kalamazoo, MI 49001
Cover
July 1996
Vol. 73 No. 7
p. 693
Abstract
A formal laboratory coding system is presented to keep track of laboratory samples. Preliminary useful information regarding the sample (origin and history) is gained without consulting a research notebook. Since this system uses and retains the same research notebook page number for each new experiment (reaction), finding and distinguishing products (samples) of the same or different reactions becomes an easy task. Using this system multiple products generated from a single reaction can be identified and classified in a uniform fashion. Samples can be stored and filed according to stage and degree of purification, e.g. crude reaction mixtures, recrystallized samples, chromatographed or distilled products.
More Information
*  Citation
 John C. Sih. J. Chem. Educ. 1996 73 693.
*  Keywords
*  History
 Created:
Last Updated:		 9/23/1999
5/22/2006
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