KOLKATA: Think the water you drink may be contaminated with deadly arsenic? A team of budding engineers claim to have the answer. They have invented an electronic arsenic detector that is handy, and cheap enough to be a fixture in every home. “All you need to do is pour a chemical in a glass of water [...]
KOLKATA: Think the water you drink may be contaminated with deadly arsenic? A team of budding engineers claim to have the answer. They have invented an electronic arsenic detector that is handy, and cheap enough to be a fixture in every home.
“All you need to do is pour a chemical in a glass of water [...]
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