Tag Archives: pH litmus

Litmus Indicator Strips

How Does Litmus Paper Work for Acids & Bases?

What is pH Litmus Paper?

Litmus paper is the most basic way you can test if a liquid is acidic (pH<7) or basic/alkaline (pH>7). Blue litmus paper turns red in acid and red litmus turns blue in alkaline. What could be simpler? It turns out there’s more to it than you thought.
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