• British Pharmacopoeia Volume V
  • Appendices
  • Appendix I A. General Reagents

Methyl Red Mixed Solution

Methyl Red Mixed Solution Dissolve 0.1 g of methyl red and 50 mg of methylene blue in 100 mL of ethanol (96%).

Colour change pH 5.2 (reddish violet) to pH 5.6 (green).