Welcome to EnviroDIY, a community for do-it-yourself environmental science and monitoring. EnviroDIY is part of WikiWatershed, a web toolkit designed to help citizens, conservation practitioners, municipal decision-makers, researchers, educators, and students advance knowledge and stewardship of fresh water. New to EnviroDIY? Start here

Richard Storey

  • I am using a colorimetric method for measuring nitrate concentrations in streams. The final part requires the user to compare the colour that develops in the sample vial to a colour chart, but our volunteers don’t like the subjective nature of this last step. I am wondering whether a mobile phone could be used as a photometer to measure the light…[Read more]