Litmus Paper Strips

Details:

• When blue litmus paper is placed in a substance that is acidic, it will turn red and red litmus paper turns blue under basic or alkaline conditions.
• The color change occurring over the pH range 4.5–8.3 at 25 ℃ (77 ℉)
• Students can test solutions for acid or base determination
• 100 cut strips in a clear plastic case