How about a purifier made of clay for safe water?
Submitted by daya on Wed, 2019-05-29 15:45
Jain has also developed a ‘clay coin’, which, he says, can disinfect the water and make it safe for drinking
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https://www.thehindubusinessline.com/news/science/how-about-a-purifier-made-of-clay-for-safe-water/article27277298.ece
Publication Date:
29/05/2019