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Acid/Base (80/284)

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pH TEST PAPER<br />
Wide Range & Short Range Paper<br />
Wide range paper displays 12 colors for pH 1-12 and gives an approximate pH. Then the short range paper displays 7 colors for ½ pH units 4.5 to 7.5.

Fphoto-37319407-2PS.jpg

pH TEST PAPER
Wide Range & Short Range Paper
Wide range paper displays 12 colors for pH 1-12 and gives an approximate pH. Then the short range paper displays 7 colors for ½ pH units 4.5 to 7.5.

Copyright:© 1994 Paul Silverman - Fundamental Photographs

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Paul Silverman
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