Abstract
The simple quinhydrone electrode can not be applied to phosphate solutions containing glucose. A specific action of the glucose on the Pt of the electrode was observed. A hydroquinhydrone electrode in a phosphate mixture, [image] 6.79, was very stable and suitable. Glucose made a phosphate solution more acid, while alcohol made it less acid, and the influence of glucose on the pH values of phosphate solutions saturated with CO2 was very feeble.