| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| kkoerner | "LukeS good to know, thanks for testing out those pumps and posting your results! " | Read more » | over 8 years ago | |||
| mathew | "Great writeup, Luke! cool work. " | Read more » | over 8 years ago | |||
| LukeS | "@kkoerner, I tried a similar pump when I was researching this and it created too much turbulent/pulsed of the air stream to get a good measurement ..." | Read more » | over 8 years ago | |||
| warren | " " | Read more » | almost 9 years ago | |||
| warren | "Great work. We'd discussed at the barnraising, the possibility (as you mention) of measuring the opacity using absorption spectroscopy, or even a p..." | Read more » | almost 9 years ago | |||
| pral2a | "Hi @kensanfran On the threat below you mentioned: "So another part of my exercise has been building up various DIY calibration rigs using pre-mix..." | Read more » | almost 9 years ago | |||
| warren | "Hi, Sophie - did you get to do your follow-up tests? I'm curious what's happened since you published this! Thanks! " | Read more » | almost 9 years ago | |||
| stoft | "Jeff, I did a few quick tests and added an "Opacity" section above. While more observations are needed, these limited results are interesting. " | Read more » | almost 9 years ago | |||
| stoft | "Thanks; good comments. 1 - Dilution: I updated the note to clarify that the larger signals were only attenuated to better match the range of the w..." | Read more » | almost 9 years ago | |||
| warren | "I especially appreciated your introduction of a "false positive" of laundry detergent here; excellently displayed too. In your first two conclusio..." | Read more » | almost 9 years ago | |||
| warren | "There is a LOT in this post; first, thank you Dave for a very thorough analysis! I'm sure I'll have more to add, but to start with, a clarificatio..." | Read more » | almost 9 years ago | |||
| eustatic | "wow " | Read more » | almost 9 years ago | |||
| stoft | "Gretchen, thanks for the insight. I'd read that the generally broad fluorescence spectrum is, as would be expected, a combination of many spectral..." | Read more » | almost 9 years ago | |||
| gretchengehrke | "This is a really great post, Dave! As for the concentration effects, in addition to quenching, there is also shielding, and there can be another p..." | Read more » | almost 9 years ago | |||
| stoft | "I just ran some new calculations looking at the curves from my existing data and found a possible correlation between oil density and the centroid ..." | Read more » | almost 9 years ago | |||
| stoft | "Jeff, thanks. 1 - Yes, you are right, there is a "glow" from EVO. However, that peak is small and out at 650nm past where it has little effect. I ..." | Read more » | almost 9 years ago | |||
| warren | " "visually differentiate between the five (5) test samples" - here, you mean based on qualitative visual inspection of the graphs, right? Do you be..." | Read more » | almost 9 years ago | |||
| warren | "This is super, and very impressive, Dave. I have a number of comments/questions, but I'll start with just a few: I'm very surprised to hear that ..." | Read more » | almost 9 years ago | |||
| shanlter | "Thanks @Liz, last year, there's a big scandal on gutter oil in Taiwan. https://en.wikipedia.org/wiki/2014_Taiwan_food_scandal " | Read more » | almost 9 years ago | |||
| liz | "Hi @ygzstc, i heard from Li Zhou and He Shan in Guangzhou who asked me to pass along a question about detecting "recycled" food oil, AKA used resta..." | Read more » | almost 9 years ago | |||
| mathew | "I was worried about those o-rings... the silicone, while durable, is flexible and doesn't stick down well. Next option is to try poking through a..." | Read more » | about 9 years ago | |||
| donblair | "Yes -- at this point it might very well be possible to do temp, conductivity, and turbidity while only needing to put screws through the cap, and t..." | Read more » | about 9 years ago | |||
| mathew | "also, right now this is, like my earlier stopper example, a sealant strategy without sensors to go with it. @Donblair has stuck to his guns on scr..." | Read more » | about 9 years ago | |||
| tonyc | "I'm not seeing any bulk sources that get us a price break over the price on amazon, so I don't really see a reason we should carry it over just lin..." | Read more » | about 9 years ago |