question:nitrate
question:nitrate


Author Comment Last activity Moderation
fez "That's great...thank you Warren. It's good to see something is moving in this direction too! So far DIY sensing is mostly relegated to air quality ..." | Read more » over 6 years ago
warren "We're starting to compile a lot of different sensors and testing methods here -- could be of help! https://publiclab.org/wiki/water-sensors " | Read more » over 6 years ago
warren "We're starting to compile a lot of different sensors and testing methods here -- could be of help! https://publiclab.org/wiki/water-sensors " | Read more » over 6 years ago
fieldlab "Yes, a good question @warren - possibly not, and I'm not sure how to find out, apart from buying a whole lot of cheap cell phones. I'll keep thinki..." | Read more » about 8 years ago
warren "Hmm, interesting! Would a cell phone screen be a really consistent spectrum? I wonder how much variability there is in manufacturing. " | Read more » about 8 years ago
fieldlab "Thanks for your reply @warren. There is pretty good discussion going on about this concept on hackaday for Pb detection in drinking water a la Flin..." | Read more » about 8 years ago
warren "Hmm, interesting. I don't know much about paper assays, but this kit available online says: Smallest Increment: Steps: 0, 0.15, 0.3, 1, 1.5, 3 ppm..." | Read more » about 8 years ago