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pH TEST PAPER: LITMUS - ACID & BASE (1 of 3)<br /> Testing Household Products<br /> Acids: Blue litmus turns red in acidic products. Bases: Red litmus turns blue in basic products.

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pH TEST PAPER: LITMUS - ACID & BASE (1 of 3)
Testing Household Products
Acids: Blue litmus turns red in acidic products. Bases: Red litmus turns blue in basic products.

Copyright:© 1989 Richard Megna - Fundamental Photographs

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