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  Home > JCE Print > Journal of Chemical Education > Issues > 1998  > June  >
In the Laboratory
Digital Capacitance Meters in the Physical Chemistry Lab
Roy W. Clark and Michael J. Smith
Middle Tennessee State University, Department of Chemistry and Physics, 1615 Jupiter Place, Murfreesboro, TN 37132
Cover
June 1998
Vol. 75 No. 6
p. 768
Abstract
Modern digital capacitance meters can be used in the physical chemistry laboratory for dielectric constant experiments, replacing older tube-type instruments. This paper cautions that the type of digital meter must be known. Our investigation found that the self-balancing bridge type of digital capacitance instruments were superior to the RC time constant digital meters. The digital capacitance meter must apply a waveform to the cell which has no dc component. Otherwise drift results, especially for polar solvents.
More Information
*  Citation
 Clark, Roy W.; Smith, Michael J. J. Chem. Educ. 1998 75 768.
*  Keywords
 Physical Chemistry, Instrumental Methods, Laboratory Instruction
*  History
 Created:
Last Updated:		 June 23, 1999
June 24, 2005
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