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1 .This is Scientific American 60-Second Science. I'm Cynthia Graber. This'll just take a minute.
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2 .It's similar to a pregnancy test: a drop of liquid on a strip of paper causes an easily seen color change.
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3 .But imagine that kind of simple, cheap technology employed in testing for pollution or health issues, anywhere and on the cheap.
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4 .Researchers at Colorado State University describe such a system in the journal Lab On A Chip.
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5 .Other paper tests may give only slight color differences, and some rely on expensive equipment to read the results.
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6 .For the new technology, the research team designed a system that creates a dramatic color change on the paper.
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7 .The user drops liquid to be analyzed at the bottom of the paper.
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8 .As capillary action pulls the liquid up, substances in the paper react, causing the color change.
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9 .So far, three tests exist for the system.
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10 .One looks for nickel, which can be an environmental pollutant.
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11 .The other two are for glutathione, a health marker, and glucose, for diabetics.
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12 .In trials, the paper tests competed with conventional methods at measuring concentrations.
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13 .The university is now spinning off a company to develop the technology.
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14 .If successful, it could bring cheap, easy analysis to scientists, and citizens around the world.
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15 .Thanks for the minute, for Scientific American 60-Second Science. I'm Cynthia Graber.
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