Key Features

• Blue Litmus Paper are a P.H. testers for Acid
• 100 strips per vial
• pH 4.3 - 6.8

Product Description

Blue Litmus Paper is a P.H. tester for Acid with pH between 4.3-6.8. 100 strips per vial. Blue litmus paper turns red or pink for acidic solutions (pH values lower than 7 (Neutral). This is used in many science projects. Each strip measures approx .25 inches x 1.75 inches.