Litmus Paper

Blue Litmus Paper

Litmus paper is a visual way to test if solutions are acidic or basic.

Using litmus paper is a simple way to test for the presence of an acid or base. Red litmus paper (which actually looks pink) turns blue in a base, and blue litmus paper (which actually looks purple) turns red in an acid. If the solution is neutral (neither acid nor base), no color change will occur. Litmus paper is easy to use and shows immediate, colorful results. Used in Year 1, Unit 9.

100 strips (1/4 inch x 1 7/8 inch) of blue litmus paper in a plastic vial.

Red Litmus Paper

Red Litmus Paper
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Litmus paper is a visual way to test if solutions are acidic or basic.

Using litmus paper is a simple way to test for the presence of an acid or base. Red litmus paper (which actually looks pink) turns blue in a base, and blue litmus paper (which actually looks purple) turns red in an acid. If the solution is neutral (neither acid nor base), no color change will occur. Litmus paper is easy to use and shows immediate, colorful results. Used in Year 1, Unit 9.

100 strips (1/4 inch x 1 7/8 inch) of red litmus paper in a plastic vial.