Ethanol as blending component for petrol – Determination of pHe according to SN EN 154907

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The pHe value is an indicator for the acid strength and shows the presence of strong acids or bases in ethanol. In Europe, ethanol is used as a blending component in gasoline and needs to have a pHe value between 6.5 and 9.0.
This Application Note describes a fast and accurate determination of the pHe value using the EtOH-Trode.