| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| gretchengehrke | "For regulatory purposes, the EPA doesn't actually measure the size of individual particles. Rather, they use a pump with an impactor. This pumps in..." | Read more » | about 7 years ago | |||
| kgradow1 | "Potential resource: A Guidebook for Particle Size Analysis (industry) https://www.horiba.com/fileadmin/uploads/Scientific/eMag/PSA/Guidebook/pdf/..." | Read more » | about 7 years ago | |||
| kgradow1 | "Comparative sizes of common particles: http://www.engineeringtoolbox.com/particle-sizes-d_934.html " | Read more » | about 7 years ago | |||
| partsandcrafts | "Second hit on the question "How small are respirable particles?" Not specific to smoke, but useful context: http://www.who.int/occupational_health..." | Read more » | about 7 years ago | |||
| warren | "@gretchengehrke mentioned 5 microns for "respirable airborne particles", in her post here: Citing @mathew (Silica dust less than 5 ?m in diameter ..." | Read more » | about 7 years ago | |||
| warren | "@wmacfarl ! " | Read more » | about 7 years ago | |||
| guolivar | "Smoke particles (and by smoke I mean combustion products) come in sizes all the way down to 1nm (0.001micron) and in shapes that make it very trick..." | Read more » | about 7 years ago | |||
| warren | "Geoff from NASA Goddard found a good resource here: https://www.fs.fed.us/pnw/pubs/pnw_gtr251.pdf Apparently under 1 micron! Very small. " | Read more » | about 7 years ago | |||
| warren | "Just wanted to note that @cfastie's been working on the #skypod -- which may fit your needs! " | Read more » | over 7 years ago | |||
| DavidMack | "I would stick with the aluminum. It's probably the most commonly used material for PM monitoring because as you stated non-conducting materials ar..." | Read more » | almost 8 years ago | |||
| warren | "Not to take credit for these answers, but I saw a couple great responses (one from @gretchengehrke, ) from this thread on which you originally aske..." | Read more » | about 8 years ago |