djaffe ✭

Agree with hopke (hi ph!). Sticky tape? Could not collect nearly enough and not of small sizes that are most important. (View Post)

Hi. I am Dan Jaffe, an atmospheric chemist at the University of Washington. I do research on air quality, ozone, PM, mercury, wildfires, etc. You can check out my teams work at: https://blogs.uw.edu/… (View Post)