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ERIC Number: EJ1032457
Record Type: Journal
Publication Date: 2014-Jun
Pages: 6
Abstractor: As Provided
Reference Count: 21
ISBN: N/A
ISSN: ISSN-0021-9584
Development of a Handmade Conductivity Measurement Apparatus and Application to Vegetables and Fruits
Set, Seng; Kita, Masakazu
Journal of Chemical Education, v91 n6 p892-897 Jun 2014
This paper describes the development of a simple handmade conductivity measurement apparatus based on a Kohlrausch bridge with inexpensive materials. We have examined the reliability of this apparatus with standard solutions and then measured juices of vegetables and fruits as well as a sports drink. Comparisons to total alkali content as determined by titration were made. The handmade apparatus was introduced to high school chemistry classes through a lesson on the conductivity of electrolyte solutions. The results showed that the developed apparatus could be used effectively for teaching high school chemistry.
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Publication Type: Journal Articles; Reports - Descriptive
Education Level: High Schools; Secondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A