Recently, we made some progress on grading different oils based on their fluorescence when hit with UV light. Using some research on LIDAR from the '80's we were able to do an end run around the intensity calibration problems of spectrometers build on top of consumer cameras and grade oils by their heaviness. http://publiclab.org/notes/mathew/09-23-2014/graded-oils-using-uv-fluorescence
I meant to bring this project last Monday, but I was busy plugging away on it late. I'll be by with the setup next time. In the mean time, we launched a kickstarter around it. We filmed the video last spring-- you may notice some sites around Portland in our Wes Anderson rip-off. https://www.kickstarter.com/projects/publiclab/the-homebrew-oil-testing-kit
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