| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| liz | "Looks like the Public Lab Store offers the microscope stage calibration slide as an Add-On. If you overlay your sample on this very small ruler, yo..." | Read more » | over 6 years ago | |||
| warren | " " | Read more » | over 6 years ago | |||
| warren | " " | Read more » | over 6 years ago | |||
| stevie | "ohh that's neat! thanks for sharing " | Read more » | over 6 years ago | |||
| nanocastro | "Hi Maybe you can try this simple method http://www.hackair.eu/hackair-cardboard/ or maybe some other passive method https://publiclab.org/wiki/pass..." | Read more » | over 6 years ago | |||
| stevie | "from @pat on the midwest list: 1. check out the following regarding air monitoring; http://www.aqmd.gov/docs/default-source/aq-spec/protocols/sen..." | Read more » | over 6 years ago | |||
| stevie | " @stevie has marked ramseysprague as a co-author. " | Read more » | over 6 years ago | |||
| stevie | "From @jeffalk on the midwest list:: @ramseysprague You say " I was back there for an hour and had to evacuate twice due to the dust. “ What monito..." | Read more » | over 6 years ago | |||
| stevie | "Response from @wicca coming in from the midwest list: Well, take the municipal government out there to experience the experienceable. If the plant ..." | Read more » | over 6 years ago | |||
| ramseysprague | "We've placed a PM monitor there, but the PM lasers don't catch the larger dust particles. We want to be able to demonstrate that ambient air qualit..." | Read more » | over 6 years ago | |||
| stevie | "Hi good question, pinging in the contact this is coming from @ramseysprague " | Read more » | over 6 years ago | |||
| stevie | "This answer coming in from @wicca : Look to the side of the roads/taking photos over time and see the sand increasing over a few days. Where there..." | Read more » | over 6 years ago | |||
| gretchengehrke | "Maxxam Labs can test for organic, elemental, and total carbon. It is a very different analysis than particulate matter or crystalline silica and re..." | Read more » | over 6 years ago | |||
| Ag8n | "The best person to ask is the manufacturer. There are so many fine grades of carbon, say for example soot or very fine grades of carbon black, tha..." | Read more » | over 6 years ago | |||
| warren | "Ack! Indeed, and oops. I'll mark this as an answer. Sometimes this happens on GitHub and we should think about ways to help with duplicated questio..." | Read more » | almost 7 years ago | |||
| stevie | "This is similar to the question I posted here. Has a couple resources on it now: https://publiclab.org/questions/warren/11-30-2017/what-are-some-wa..." | Read more » | almost 7 years ago | |||
| amirberAgain | "Another point refers to here is the use of cross polarization, I guess that part of the importance of it is that some materials either have or don'..." | Read more » | almost 7 years ago | |||
| amirberAgain | "It looks like, at the least in part this is an open resource, some parts do require free registration see more here: http://www.mccroneatlas.com/ " | Read more » | almost 7 years ago | |||
| warren | "Note these prior questions related to this one: https://publiclab.org/notes/mathew/10-07-2016/sizing-images-at-portland-science-hackday And this,..." | Read more » | almost 7 years ago | |||
| warren | "Great idea. There could be stages of analysis, narrowing in progressively. +1! " | Read more » | almost 7 years ago | |||
| warren | "I also posted a question over here to try to collect images from various sources of respirable silica for use as a reference in our #basic-microsco..." | Read more » | almost 7 years ago | |||
| warren | "This blog is by someone who works for an energy company, helping to mine frac sand, and publishes a book called "Finding Frac Sand" -- yikes. The ..." | Read more » | almost 7 years ago | |||
| warren | "TXSharon posted this note about photographs of sand dust from a sandbox: http://www.texassharon.com/2012/07/31/take-this-nice-fracking-sand-for-yo..." | Read more » | almost 7 years ago | |||
| Ag8n | "It gives a range of magnifications. As for sample prep- "samples were mounted in aroclor 5442 or the equivalent Carville refractive index liquid 1..." | Read more » | almost 7 years ago |