particulate-matter
question:particulate-matter

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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 » almost 4 years ago
warren " " | Read more » almost 4 years ago
warren " " | Read more » almost 4 years ago
stevie "ohh that's neat! thanks for sharing " | Read more » almost 4 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 » almost 4 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 » almost 4 years ago
stevie " @stevie has marked ramseysprague as a co-author. " | Read more » almost 4 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 » almost 4 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 » almost 4 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 » almost 4 years ago
stevie "Hi good question, pinging in the contact this is coming from @ramseysprague " | Read more » almost 4 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 » almost 4 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 » about 4 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 » about 4 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 » about 4 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 » about 4 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 » over 4 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 » over 4 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 » over 4 years ago
warren "Great idea. There could be stages of analysis, narrowing in progressively. +1! " | Read more » over 4 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 » over 4 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 » over 4 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 » over 4 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 » over 4 years ago