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pH TEST PAPER: UNIVERSAL INDICATOR PAPER<br />
Acid<br />
"HYDRION PAPER" showing even pH.

Fphoto-45539810B-3LS.jpg

pH TEST PAPER: UNIVERSAL INDICATOR PAPER
Acid
"HYDRION PAPER" showing even pH.

Copyright:© 1998 Larry Stepanowicz - Fundamental Photographs

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Larry Stepanowicz