Division 3.6
United Kingdom
Indicator: mixture 1: 1 (v/v) of methyl red (0,03 % m/v in ethanol) and methylene blue (0,05 % m/v in ethanol). Filter the solution.
United Kingdom
Indicator: mixture 1: 1 (v/v) of methyl red (0,03 % m/v in ethanol) and methylene blue (0,05 % m/v in ethanol). Filter the solution.