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pH TEST PAPER: UNIVERSAL INDICATOR PAPER<br />
Paper Is Testing An Ammonium Hydroxide Solution<br />
Purple-Pink color of "DUAL-TINT PAPER" indicates pH 9-10.

Fphoto-39629505B-2RM.jpg

pH TEST PAPER: UNIVERSAL INDICATOR PAPER
Paper Is Testing An Ammonium Hydroxide Solution
Purple-Pink color of "DUAL-TINT PAPER" indicates pH 9-10.

Copyright:© 1995 Richard Megna - Fundamental Photographs

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