Purple Litmus Paper for Measuring PH

Purple Litmus Paper for Measuring PH - Universal indicator paper - pH measuring paper Product description Material: Instruction paper Specification: 80 pieces/pack, 1 box Box of 20 packs. The above unit price is for 1 package Product information: Litmus paper is paper soaked in a solution of ethanol or water with a colorant extracted from lichen roots, whose original color is purple (so it is also called purple litmus paper), used in the chemical industry to help Determine the acid/base properties of the solution through color changes. When dipping a piece of litmus paper into a solution, if it turns blue, the solution is basic, if it turns red, the solution is acidic, and if the paper color remains purple, the solution is neutral. Quantity: 80 pieces/package