Science

Build your own water quality tester

Build your own water quality tester

By Gareth Branwyn

Gareth Branwyn

Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. His free weekly-ish maker tips newsletter can be found at garstipsandtools.com.

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In response to our item about the commercial TDS (total dissolved solids) water testing tool, somebody sent us a link to this homemade meter, which tests for TDS, EC (electrical conductivity), PPM (parts per million). EC/TDS/PPM Meter On Limited Budget – Link Related: Testing your own drinking water – Link

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Attention DC Dorks!

By Gareth Branwyn

Gareth Branwyn

Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. His free weekly-ish maker tips newsletter can be found at garstipsandtools.com.

View more articles by Gareth Branwyn
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Don’t forget: This Tuesday (tomorrow, Feb 26, 7-9pm) is the next Dorkbot DC. Presenters include Katie Bechtold, a spacecraft flight software developer and controller, talking about the Mercury MESSENGER mission, Justin Sabe on making cheap MIDI controlled instruments from toys, and Alberto Gaitán, presenting Part Two, The Software, of his talk on Remembrancer, the amazing […]

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