Originally published on July 22, 2013

A Swedish engineer has invented a method of turning sweat into drinking water to help promote a UNICEF campaign in Gothenburg raising awareness over inadequate access to clean water, according to Britain's The Independent.

The device, dubbed the "Sweat Machine", was designed by engineer and TV personality Andreas Hammar, and uses technology developed by Sweden's Royal Institute of Technology and water purification company HVR.

It extracts moisture from worn clothes by first spinning and heating them, before using a Gor-Tex-like material to filter the resulting liquid through a purification process known as membrane distillation.

A sweat-drenched T-shirt typically produces 10ml, or roughly a mouthful, of water, which the machine's inventors claim is cleaner than local tap water.

UNICEF estimates that 780 million people worldwide do not have access to safe, clean drinking water.

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