Using acid–base indicator strips is the simplest way to determine the pH of a solution. Litmus blue will turn red in the presence of acid while litmus red will turn blue in the presence of base. Includes a ChemFax activity instructing students how to test the pH of common household solutions. Contains 100 strips of litmus blue and litmus red.
Materials Included in Kit: Litmus blue test papers, vial Litmus red test papers, vial