Figure 1From: A convenient method for determining the concentration of hydrogen in water: use of methylene blue with colloidal platinumConceptual illustration of the reaction between H 2 and MB-Pt. 1 mole of hydrogen molecules reacts with 1 mole of methylene blue (MB) molecules to give 1 mole of reduced MB (leucomethylene blue, leucoMB) molecules.Back to article page