Question

What is PH paper made of?

Answer 1

The primary raw materials used for making litmus paper are wood cellulose, lichens, and adjunct compounds. Litmus paper, as its name implies, is primarily composed of paper. The paper used to make litmus paper must be free of contaminants that could change the pH of the system it is measuring.

Answer 2

pH paper is made by soaking the people in a mixture of indicators which are organic dyes they show different colours at different pH values .
blue Litmus Paper turns red under acidic conditions and red litmus paper turns blue under basic conditions