A Cheap, Semiquantitative Hand-Held Conductivity Tester.

Zawacky, Susan K. S.

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Peer reviewed

ERIC Number: EJ541728

Record Type: Journal

Publication Date: 1995

Pages: N/A

Abstractor: N/A

ISBN: N/A

ISSN: ISSN-0021-9584

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A Cheap, Semiquantitative Hand-Held Conductivity Tester.

Zawacky, Susan K. S.

Journal of Chemical Education, v72 n8 p728-29 Aug 1995

Describes a design for a hand-held conductivity tester powered by a 9V battery that gives semi-quantitative results for aqueous electrolyte solutions of concentrations ranging from 0.001 M to 0.1 M. The tester uses a bar-graph LED driven by an LM3914 integrated circuit to indicate the level of conductivity. A list of parts, procedures, and results is given. (AIM)

Descriptors: Chemical Analysis, Chemistry, Electric Circuits, Experiential Learning, Higher Education, Laboratory Procedures, Science Activities, Science Equipment, Science Instruction, Secondary Education

Publication Type: Guides - Classroom - Teacher; Journal Articles

Education Level: N/A

Audience: N/A

Language: English

Sponsor: N/A

Authoring Institution: N/A

Grant or Contract Numbers: N/A

Author Affiliations: N/A