This is a regional page for the Public Lab Community in the midwestern United States and Canada. North Dakota, South Dakota, Nebraska, Oklahoma, Minnesota, Iowa, Missouri, Wisconsin, Illinois, Indiana, Michigan, Ohio. ###Organizers in the Midwest * [Pat Popple](/profile/Pat) (Chippewa Falls, WI) * [Anita Chan](/profile/anita) (Champaign-Urbana, IL and Lima, Peru) ###Existing chapters in the Midwest **Discussing on the [Midwest mailing list](https://groups.google.com/forum/#!forum/publiclab-midwest):** - [Chicago](http://publiclab.org/wiki/chicago) Discussing on the [Chicago mailing list](https://groups.google.com/forum/#!forum/public-lab-chicago) - [Wisconsin](/wiki/wisconsin) Discussing on the Midwest mailing list ###Midwest Projects - [The Frac Sand Issue](https://www.publiclab.org/wiki/frac-sand) - [The Petcoke Issue](https://publiclab.org/wiki/chicago) ...
| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| 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 » | over 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 » | over 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 » | over 10 years ago | |||
| warren | "Draft starting to come together here: http://publiclab.org/wiki/youth-balloon-mapping-workshop-curriculum " | Read more » | over 10 years ago | |||
| jefffalk | "Thanks for the info on the DUSTTRAK. It's good to remember everything comes with advantages and disadvantages. Adjusting for or eliminating humidit..." | Read more » | over 10 years ago | |||
| DavidMack | "@jefffalk TSI explains the instrument and its calibration in documents on its web site: http://www.tsi.com/DUSTTRAK-Aerosol-Monitor-8520/ see "th..." | Read more » | over 10 years ago | |||
| jefffalk | "After reviewing these posts it became apparent that there are two questions here. One is about "eliminating" humidity, possibly by mechanical means..." | Read more » | over 10 years ago | |||
| mathew | "I'll connect with Hank on his Dylos-- we'll see what he's doing. there are a million ways to do this that have already been done-- so yeah, we sh..." | Read more » | over 10 years ago | |||
| jefffalk | "Hank Boschen's Dylos monitoring system in Chippewa Falls records readings from a Dylos every 10 minutes and posts to a website. It also includes we..." | Read more » | over 10 years ago | |||
| DavidMack | "sorry for the late reply but as you probably discovered as the air sample relative humidity increases, the moisture increasingly interferes with th..." | Read more » | over 10 years ago | |||
| bsugar | "in general, this is very impressive Meghan. Great work. One thing we should discuss is how to take these things and put them in terms that are ag..." | Read more » | over 10 years ago | |||
| mathew | "right. I always tell them to just "Snap & Wrap" " | Read more » | over 10 years ago | |||
| bsugar | "matthew, happy for a more stable camera, sad to lose an opportunity to do the coolest knot in the project. it's very satisfying to watch people as..." | Read more » | over 10 years ago | |||
| jefffalk | "Let's try again. Gravimetric monitors capture particles and allow a weight of those captured to be determined. The distribution of aerodynamic diam..." | Read more » | over 10 years ago | |||
| mathew | "I've been operating on the assumption that the EPA/ISO standard = PM2.5. I guess this is an etymology question. which came first: PM2.5 or the EP..." | Read more » | over 10 years ago | |||
| jefffalk | "As I understand it PM2.5 implies an aerodynamic diameter of 2.5 microns, straight forward with no "mean" involved. The "mean" enters with the epa ..." | Read more » | over 10 years ago | |||
| mathew | "maintenance is an issue-- look at these dylos monitors in China building up particulates http://aqicn.org/faq/2013-10-21/dylos-air-particule-conter..." | Read more » | over 10 years ago | |||
| mathew | "@donblair-- the author doesn't seem to understand the terminology in use. The conclusions are based on a misunderstanding of what PM2.5 actually m..." | Read more » | over 10 years ago | |||
| mathew | "@donblair-- the author doesn't seem to understand the terminology in use. The conclusions are based on a misunderstanding of what PM2.5 actually m..." | Read more » | over 10 years ago | |||
| Jdahlen | "Yes, we're hoping we can get the Ethernet and USB connection to work for the Dusttrak. As for the Dylos, the only information we are able to take o..." | Read more » | over 10 years ago | |||
| donblair | "Did you see the article AmySoyka posted about the Dylos? http://publiclab.org/notes/Schroyer/06-26-2014/broadcast-dust-readings-from-a-smartphone#c..." | Read more » | over 10 years ago | |||
| donblair | "Did you see the article AmySoyka posted about the Dylos? http://publiclab.org/notes/Schroyer/06-26-2014/broadcast-dust-readings-from-a-smartphone#c..." | Read more » | over 10 years ago | |||
| mathew | "Oh Ethernet! Cool that probably isn't too hard to talk to but a computer of some sort will be needed. Serial is great! We can probably get it to t..." | Read more » | over 10 years ago | |||
| Jdahlen | "We usually just record the data right after our 24-hour sampling, but the Tech team at UWEC is helping us figure out how to retrieve our continuous..." | Read more » | over 10 years ago |