Concept: Low-cost arsenic detector for drinking water

SHENDY is an open-source and low-cost arsenic detector being developed by an international group of students. The aim is to create a smartphone connected device that can test whether groundwater is safe to drink based on its arsenic content, which is often at poisonous levels in post-conflict zones and after natural disasters.

https://www.kickstarter.com/projects/1499966707/low-cost-open-source-arsenic-detector-for-drinking

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