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Measuring Ethanol Content in Hand Sanitiser Using Raman Spectroscopy

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Measuring Ethanol Content in Hand Sanitiser Using Raman Spectroscopy

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Hand sanitiser is a gel like liquid used to kill microorganisms, providing a way to disinfect hands when there is no way for hand washing with soap and water. They’ve seen a boom in demand due to the COVID-19 pandemic, with either ethanol or isopropyl being the active ingredient. Generally, ethanol is slightly more effective than isopropyl, but this depends on the microbe of interest. The Centres for Disease Control and Prevention (CDC) states a disinfecting hand gel should have ethanol content (or isopropyl) of 60-90% to be effective.1 Anything less than this will not successfully kill all microbes present and therefore still leave a risk of infection.

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