Rivers, oceans, lakes, aquifers, groundwater, stormwater, urban canals, underground streams, estuaries, and more -- we are passionate about water quality! This page will help you find resources to explore the waterbodies you care about, and connect with other people who have the same interests: ### Questions on Water Quality: [questions:water-quality] **** ## Monitoring * [Water sampling](/water-sampling) * [Water sensors](/water-sensors) * Posts on #water-monitoring * Posts on #water-testing * Posts on #reagents ## Water quality parameters Read about different water quality parameters here, including pH, nitrogen, conductivity, temperature, ORP and turbidity: * https://publiclab.org/common-water-contaminants Also see this overview of 7 ways to monitorn water quality: * https://publiclab.org/notes/anngneal/12-08-2017/7-ways-to-measure-monitor-and-evaluate-water-quality ## Groups and projects working on water quality issues: [wikis:project:water-quality] **** ## Water quality related pages [wikis:parent:water-quality] **** ## Activities [activities:water-quality]...
| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| Islamicqurancenter | "Islamic Quran center is an Online Quran Center Specially for both kids & Adults for Noorani Qaida, Tajweed, Tafseer, Urdu Translation, Memoriza..." | Read more » | almost 2 years ago | |||
| liz | "@bronwen Check this out! " | Read more » | almost 2 years ago | |||
| Ag8n | "Very helpful video on the lens removal. Thank you. " | Read more » | almost 2 years ago | |||
| Ag8n | "Yes, that did it! Thank you very much. Only did a quick once over of the diagrams. It looks like they take the focusing lenses out of a CD drive ..." | Read more » | almost 2 years ago | |||
| alejobonifacio | "Thanks for let me know. Please try with this link... https://www.researchgate.net/publication/343539752_Micro-Hoek_Manual_de_Construccion " | Read more » | almost 2 years ago | |||
| Ag8n | "Having trouble with the "digital manual of construction in spanish". For whatever reason, the link doesn't work here. Could you please post the i..." | Read more » | almost 2 years ago | |||
| eustatic | "this is a low cost science ed option marketed on Fisher Scientific: https://www.fishersci.com/shop/products/fieldmaster-plankton-net-6/p-2796601 ..." | Read more » | almost 2 years ago | |||
| imvec | "Just noticed this jeff! Awesome! " | Read more » | almost 2 years ago | |||
| keansargent | "Hi, guys! Do you know, that companies all over the world are in need of highly qualified professionals who are eager to use cutting-edge technologi..." | Read more » | almost 2 years ago | |||
| alejobonifacio | "Reading a little more I found that you could change the frequency of the PWM in arduino. I did not try to do this. " | Read more » | almost 2 years ago | |||
| alejobonifacio | "Hi! good question! The frequency of PWM of arduino is about 500hz. Is that enough for conductivity measurement? " | Read more » | almost 2 years ago | |||
| infowavex9 | "It is the technology of automatically collecting consumption, diagnostic, and status data from water meters. Wavex coin Wavex is a US-based Coin th..." | Read more » | almost 2 years ago | |||
| TomZ | "I finally joined Public Lab! I've been adding youtube videos on building an inexpensive (<$20) lensless holographic microscope (<4um resoluti..." | Read more » | almost 2 years ago | |||
| michelleiL | "Hi @kgradow1, thank you for sharing all this info on how to read EIS. I'm wondering if you have info on what are the stages of an EIS? For example..." | Read more » | almost 2 years ago | |||
| JasmineKurb | "Wow, This is amazing. Science is completely based on experiments. If you are staying science then you should know how to do experiments and you mus..." | Read more » | about 2 years ago | |||
| Fleer | "@hspencer22 Great news that you are working with Marc Glass--his group is excellent. Please reach out to CAES if we can help with anything else. Th..." | Read more » | about 2 years ago | |||
| Ag8n | "The conductivity cell should take the place of Rx. So disconnect the conductivity cell, disconnect Rx, leave the one of the conductivity cell conn..." | Read more » | about 2 years ago | |||
| alejobonifacio | "Thanks @Ag8n for the explanation! I am learning a lot! :nerd_face: " | Read more » | about 2 years ago | |||
| alejobonifacio | "Hi @Ag8n! What you suggest sounds interesting. Would it be something similar to the attached diagram? " | Read more » | about 2 years ago | |||
| Ag8n | "Further note-EC is electrical conductivity " | Read more » | about 2 years ago | |||
| Ag8n | "Especially in mixtures, not all soluble solids are conductive. So yes, you can dissolve (or sometimes suspend) something inert in water. We would..." | Read more » | about 2 years ago | |||
| warren | "This is very cool! I do wonder if TDS is going to be consistently correlated with conductivity -- i may just not be well informed but isn't it poss..." | Read more » | about 2 years ago | |||
| Ag8n | "Look up conductivity cell and wheatstone bridge Instead of feeding DC into the weatstone bridge, the audio signal is fed in. One leg of the wheats..." | Read more » | about 2 years ago | |||
| alejobonifacio | "Thanks for your suggestion @Ag8n, sounds very interesting to try. Anyway I have to be honest and say that I don't quite figure out how to do what y..." | Read more » | about 2 years ago |