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Communications of the ACM

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A Low-Power, Highly Responsive, Reusable Sweat pH Monitor


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The pH Watch and accompanying app.

Researchers at the National University of Singapore have developed an upgrade to wearable health monitors that can read the pH of wearers' sweat.

Credit: National University of Singapore

National University of Singapore (NUS) researchers have developed an upgrade to wearable health monitors that can read the pH of wearers' sweat.

The pH Watch, which can be incorporated into current fitness trackers or smartwatches, can track the acidity or alkalinity level of the user's perspiration, along with heart rate and blood oxygen concentration, in real time.

The researchers integrated a custom pH sensor and a pH sensing algorithm into pulse oximeter-equipped gadgets, which read sweat pH, heart rate, and blood oxygen saturation values with approximately 90% accuracy.

Said NUS' Ananta Narayanan Balaji, “We created the pH Watch because sweat is a readily accessible bodily fluid composed of a wide array of biochemical markers that can be used to monitor the well-being of individuals in a non-invasive manner.”

From NUS News (Singapore)
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Abstracts Copyright © 2020 SmithBucklin, Washington, DC, USA


 

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