| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| jhondue123456 | "https://www.google.com/ " | Read more » | 21 days ago | |||
| dex_zhou | "one of important point to industrial producing is how to limit the float, and makes the value accurate even after 3,5 years, products like https://..." | Read more » | over 3 years ago | |||
| auressig | "Hello @bhickman, I know it has been a while since your last message but I have read this thread with a lot of interest, and I was wondering if you ..." | Read more » | almost 4 years ago | |||
| DrJohnBarrett | "I have more sophisticated instruments for water quality testing, if needed.. " | Read more » | almost 6 years ago | |||
| stevie | "Also, we split up the kit before the workshop. We had the students divide into groups and rotate through the testing, so everyone was able to get h..." | Read more » | almost 6 years ago | |||
| stevie | "Here's the page we put together to make a worksheet for students. It's from the materials in the book, but since we were doing this with 10 or so s..." | Read more » | almost 6 years ago | |||
| bhickman | "Hi Patrick. I'm currently out in the field as part of a research team and won't be back to my lab for a few weeks. Once I get back I can look at so..." | Read more » | almost 7 years ago | |||
| pdhixenbaugh | "Hi Ben, checking in here -- have you used this design any further? A few folks would be very interested to see what kinds of accuracy and precision..." | Read more » | almost 7 years ago | |||
| pdhixenbaugh | "Ben, thank you for that explanation, it is very helpful in understanding many of the challenges and solutions presented by conductivity field measu..." | Read more » | over 7 years ago | |||
| bhickman | "Hello pdhixenbaugh, I like how you have colored the schematic, makes things much clearer. As for your questions, I'll try and answer them. Firstly..." | Read more » | over 7 years ago | |||
| pdhixenbaugh | "Hi Ben, There is a lot to dive into here. I would really like to learn how this circuit works. I'm also new to this, and have a lot of questions. T..." | Read more » | over 7 years ago | |||
| rfdave | "Thanks. I'm thinking about a Water quality Staff made from PVC with temperature, conductivity, and turbidity sensors build in, so I'm not thinking ..." | Read more » | almost 8 years ago | |||
| bhickman | "Hi rfdave. To my knowledge the only requirements is that the electrodes be inert. I chose graphite because I had some laying around and its cheap. ..." | Read more » | almost 8 years ago | |||
| rfdave | "I've got a question. Is there any reason you couldn't use metallic electrodes instead of the graphite? Stainless steel would be more rugged and po..." | Read more » | almost 8 years ago | |||
| bhickman | "Hi donblair, thanks. There is still a bit of development to be done, especially for extended deployments, but I think the design shows promise. I ..." | Read more » | almost 8 years ago | |||
| donblair | "Ben, Fantastic job on this! Excellent descriptions of the entire system -- the electronics, the probe design, and the calibration procedure. Ver..." | Read more » | almost 8 years ago |