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  Home > JCE Print > Journal of Chemical Education > Issues > 2001  > December  >
In the Laboratory
A Simple Preparative Method to Evaluate Total UV Protection by Commercial Sunscreens
Shouei Fujishige, Sumiko Takizawa, and Kaoru Tsuzuki
Laboratory for Polymers and Textiles, Tokyo Kasei University, Tokyo 173-8602, Japan
Cover
December 2001
Vol. 78 No. 12
p. 1678
Abstract
The optical transparency of a cellulose membrane in the UV region is equivalent to that of a high-quality quartz plate. A simple preparative method to obtain UV absorption spectra of sunscreens over two length regions, UVB and UVA, is presented with some experimental results obtained using a Visking tubular membrane. The thickness of the optical path can be controlled by simple squeezing at the surface of the membrane holding the creamy sample in the tubular space on a flat plate.
More Information
*  Citation
 Fujishige, Shouei; Takizawa, Sumiko; Tsuzuki, Kaoru. J. Chem. Educ. 2001 78 1678.
*  Keywords
 Consumer Chemistry; Laboratory Instruction; Materials Science; Safety / Hazardous Materials; UV-Vis Spectroscopy
*  History
 Created:
Last Updated:		 November 2, 2001
August 31, 2005
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