Litmus paper is divided into two categories: red litmus paper and blue litmus paper. If the material is acidic, the blue litmus paper turns red. If the material is basic or alkaline, the red litmus paper turns blue. In acidic solutions, litmus turns red, while in simple solutions, it turns blue.
Whilst we strive to maintain stock availability, this is sometimes not possible. Please contact us for availability and lead time. Thank you for your patience and understanding.
