| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| mathew | "following up on our discussion about trying to calibrate the pump without the flow meter-- could we calibrate the pump at our office, and then have..." | Read more » | about 9 years ago | |||
| danbeavers | "Oh, I was making assumptions. I had not seen a pump that was set up to have 2 different attach points. So never mind about my comment! " | Read more » | about 9 years ago | |||
| nshapiro | "@danbeavers were you using the whisper pump or another pump? I think the whisper pump can handle one pump and one vacuum if need be " | Read more » | about 9 years ago | |||
| danbeavers | "On reversing the aquarium pump: Be sure and reverse both diaphragms! " | Read more » | about 9 years ago | |||
| warren | "Hi, Nick - I'm working on some sketches of the kit; do you have any photos of the entire thing, just a bit more zoomed out? Thanks! " | Read more » | about 9 years ago | |||
| sara | "Hi Sophie it just occurred to me that the Hydrogen Sulfide may have reacted with the metallic surface of the bag? Did you consider that? What were ..." | Read more » | about 9 years ago | |||
| mathew | "I just bought the air pump components and a graduated cylinder to try and compare @davidmack's cheapo air meter... can't wait. I'm going to try us..." | Read more » | about 9 years ago | |||
| nshapiro | "I think so. Those tubes require one pump on the Draeger Tube proprietary pump. So if one were to rent their proprietary pump for a single day and a..." | Read more » | over 9 years ago | |||
| sara | "Exciting stuff! Do you think this method could work for other pump based tubes like these http://www.buydraegertubes.com/hydrogensulfide02b.aspx " | Read more » | over 9 years ago | |||
| kensanfran | "I just posted a second Research Note on this project which covers basic board information and some initial real-world field data. http://publiclab..." | Read more » | over 9 years ago | |||
| nshapiro | "That sounds like a great idea. The flow meter remains the most expensive component so reducing this cost is clutch. This sounds like something that..." | Read more » | over 9 years ago | |||
| kensanfran | "Hi Neil, Thanks for your nice comments. Yes, I think the general issue of data quality from citizen science sensors is finally starting to get the..." | Read more » | over 9 years ago | |||
| DavidMack | "The commercial air flow meters are easy to use and come with NIST traceable certificates but you can make your own air flow meter for lab use that ..." | Read more » | over 9 years ago | |||
| nbmasson | "Nice work! Looks like a clean and well-designed module. FYI, you can find some more open-source info at http://mobilesensingtechnology.com/ with s..." | Read more » | over 9 years ago | |||
| neilh20 | "Hey fantastic to have a calibrated gas sensor as the starting point. It is essential to the definition of "quality" in any air quality measurement ..." | Read more » | over 9 years ago | |||
| cfastie | "I don't know whether you could see a clear projected image of the spectrum. I think you could, but it would rather small and dim. I also don't know..." | Read more » | over 9 years ago | |||
| wizard | "Wow... excellent information... thanks. I am a newbie, and my questions will be indicative of that.... I see now that I may assemble two spectrome..." | Read more » | over 9 years ago | |||
| kmsmith | "Nice work Jeff! Hope to catch up next time you are in the Boston area. -Kevin " | Read more » | almost 10 years ago | |||
| warren | "Thank you so much for posting this!!!!! Very helpful even just on the basis of showing how to change image capture mode. I haven't tried these test..." | Read more » | almost 10 years ago | |||
| WhiteRabbit | "Be mindful how temperature may affect your saline conductivity measurements, as I tried to point out in the comments here: http://publiclab.org/not..." | Read more » | almost 10 years ago | |||
| patcoyle | "Terrific writeup and results, +1 to above comments. Excellent. " | Read more » | almost 10 years ago | |||
| sophie | "Thanks for all the positive feedback! I'm not sure where the bags originally came from, but they cost about $35 for five here: http://beprepared.co..." | Read more » | almost 10 years ago | |||
| megan | "Nice! I love the water bag tests, it is really brilliant. What is the cost of the bags? If doing a large scale deployment, it seems like it would b..." | Read more » | almost 10 years ago | |||
| warren | "Wow, this looks great; I really appreciate the emphasis on ease of construction and your careful water bag tests! @megan, @deepwinter, and others w..." | Read more » | almost 10 years ago |