

Methyl Red-Methylene Blue TS (USP) by Exaxol, catalog numbers M5061-100 and M5061-500, is a mixed indicator per USP TS methyl red-methylene blue indicator solution in alcohol, changing from red-violet in acid to green in base near pH 5.4. Available in 100 mL and 500 mL from MBP, a registered vendor to many research institutes across the USA.

