What is Litmus Paper? How does it work? Litmus paper is a type of pH indicator paper used to determine the acidity or alkalinity of a substance. It is impregnated with a mixture of natural dyes extracted from lichens, primarily Roccella tinctoria. Litmus paper is available in two common forms: blue litmus paper and red litmus paper.
The working principle of litmus paper relies on the concept of acid-base indicators. These indicators...
