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  Home > JCE Print > Journal of Chemical Education > Issues > 2005  > December  >
In the Laboratory
Computer Bulletin Board
Simple and Inexpensive Computer Interface to a Durrum Stopped-Flow Apparatus Tested Using the Iron(III)–Thiocyanate Reaction
Craig M. Hoag
Department of Chemistry, State University of New York at Plattsburgh, Plattsburgh, NY 12901
Cover
December 2005
Vol. 82 No. 12
p. 1823
Abstract
A computer has been interfaced with a Durrum model 110 stopped-flow apparatus using a LabPro unit and LoggerPro software from Vernier Software and Technology. Two separate voltage probes from Vernier were used: one to monitor the trigger signal to initiate data collection and one to receive the output voltage signal from the stopped-flow apparatus. An experiment reacting iron(III) ion with thiocyanate ion in aqueous solution at 25 °C was used to test the reliability of the interface. The LabPro unit and LoggerPro software can be used to measure the data from most instruments normally connected to an oscilloscope or chart recorder.
Supplement
Further discussion regarding the operation of the stop-flow apparatus is available.
*  Contents Folder JCE2005p1823W containing JCE2005p1823W.doc (Microsoft Word), JCE2005p1823W.cdr (ChemDraw), and JCE2005p1823W_1.xls, JCE2005p1823W_2.xls, JCE2005p1823W_3.xls (Microsoft Excel)
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*  Citation
 Hoag, Craig M. J. Chem. Educ. 2005 82 1823.
*  Keywords
 Computer-Based Learning; Coordination Compounds; First-Year Undergraduate / General; Instrumental Methods; Kinetics; Laboratory Computing / Interfacing; Laboratory Instruction; Physical Chemistry; Second-Year Undergraduate; UV-Vis Spectroscopy
*  History
 Created:
Last Updated:		 October 25, 2005
November 4, 2005
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