Division 4.7
United Kingdom
Indicator, if required: mix 5 ml of a 0,1 % (m/v) methyl red solution in ethanol with 2 ml of 0,1 % (m/v) methylene blue solution in water.
United Kingdom
Indicator, if required: mix 5 ml of a 0,1 % (m/v) methyl red solution in ethanol with 2 ml of 0,1 % (m/v) methylene blue solution in water.