| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| bsugar | "hmmm...well, this presents a dilemma in that Public Lab will be the only ones with the purchasing power to buy them inexpensively, but people will ..." | Read more » | over 10 years ago | |||
| warren | "OK, links to some citations. I'm visiting an MIT building now so it's hard to tell which are open access; i'll try to check on this later: Jiji et..." | Read more » | over 10 years ago | |||
| warren | "The orig bottles were basically square, but not very precise -- sort of that wavy crude surface from molded glass. But I have a sense that there's ..." | Read more » | over 10 years ago | |||
| warren | "Interesting -- specific PAHs are (as we've seen in other literature) out of the 400-1000nm range of our device: monoaromatic compounds (benzene, t..." | Read more » | over 10 years ago | |||
| warren | "p56 mentions "polycyclic aromatic hydrocarbons (PAHs), pesticides, environmental hormones" as contaminants that can be detected with fluorescence s..." | Read more » | over 10 years ago | |||
| warren | "So the Carstea paper is great for one particular reason - we've suspected that organic material could fluoresce and potentially interfere with our ..." | Read more » | over 10 years ago | |||
| warren | "Aha! Line 7 of p54 says: The Raman scatter line can be used to check for instrument stability and to quantify the degree of contamination from a w..." | Read more » | over 10 years ago | |||
| warren | "p.51 has a discussion of pH and salinity on spectra: "intensities increase with higher pH until 10, as observed by Reynolds and Ahmad (1995) at raw..." | Read more » | over 10 years ago | |||
| warren | "Page 50 also discusses filtering effects -- where the color of the sample itself (yellow, brown) can filter out some wavelengths of fluorescence. T..." | Read more » | over 10 years ago | |||
| bsugar | "regarding the new bottles, in my search to find alternatives, it seems like even the squarest of bottles on the outside have some curvature on the ..." | Read more » | over 10 years ago | |||
| warren | "indeed. Updating now! " | Read more » | over 10 years ago | |||
| bsugar | "sure thing. maybe add something on this page that says "most recent parts list here" where here is the wiki page. " | Read more » | over 10 years ago | |||
| warren | "Hi, Benjamin - I think we're now going off the parts list on the oil testing kit page: http://publiclab.org/wiki/oil-testing-kit#Parts+list Yes, I..." | Read more » | over 10 years ago | |||
| bsugar | "a confusion about the parts list on the line about the laser: "or http://www.ebay.com/itm/like/350812684726?lpid=82 to buy just one cuvettes" two..." | Read more » | over 10 years ago | |||
| warren | "Ooh, 36 articles which cite this one: http://scholar.google.com/scholar?cites=12262006161023041861&as_sdt=40000005&sciodt=0,22&hl=en t..." | Read more » | over 10 years ago | |||
| warren | " oil-testing-kit-frame-0.1.pdf " | Read more » | over 10 years ago | |||
| warren | " Bench flange and integration concepts. " | Read more » | over 10 years ago | |||
| bsugar | "@stevie, it would be very helpful. I think all and all this makes an excellent framework for any workshop, in particular the part where you have t..." | Read more » | over 10 years ago | |||
| warren | "I like the idea that if there are 4 tables, four different organizers can sort of "staff" the tables, focusing on the parts they know best. " | Read more » | over 10 years ago | |||
| stevie | "hey all, Great thread. Scott thanks for writing up the materials list. Also, I'll add we had sticky notes and markers on each table with a post-it ..." | Read more » | over 10 years ago | |||
| warren | "Unexpected yes -- it was for some reason much harder to get light into the webcam! But very easy on a smartphone. We're working a bit on this probl..." | Read more » | over 10 years ago | |||
| warren | "Wheeee! Cardboard fits like a glove! It needs a couple tweaks for the thickness, longer tabs and for loss due to folding on the angled piece. I als..." | Read more » | over 10 years ago | |||
| eustatic | "1) yes 2) there's not enough light, so perhaps angling the laser a certain way, or shining it through at the right level would help, so that the ca..." | Read more » | over 10 years ago | |||
| bsugar | "Follow up: 1) Does the reflective material go in the back of the bottle? 2) By laser-camera alignment, so you mean that the horizontal beam from ..." | Read more » | over 10 years ago |