| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| martin-slavik | "Limit of detection is dependent on instrument and method used. Desktop spectrometer works only with visible light, so for detection of substance yo..." | Read more » | about 6 years ago | |||
| amirberAgain | "There are two devices I'm familiar with which could be relevant to your question: Nima - uses detection strips for gluten https://nimasensor.com/ ..." | Read more » | about 6 years ago | |||
| Ag8n | "Metals usually take instruments like atomic absorption (AA) or inductively coupled plasma (ICP). These instruments can NOT be done easily on the P..." | Read more » | about 6 years ago | |||
| gretchengehrke | "Hi @rajanzaveri, What sorts of concentrations and what media are you interested in measuring? Do you have more specific constraints for measurement..." | Read more » | over 6 years ago | |||
| islenos | "Hi Rajan! I'd love to know if you were able to figure out how to measure these compounds using the spectrometer. We are looking to measure cadmium,..." | Read more » | over 6 years ago | |||
| ronhuber | "I think those cheap riffle crickets would be great! Can we set a time and date to meet and test deploy one or more? One assumes the 'seeps' w..." | Read more » | almost 10 years ago | |||
| warren | "@donblair - is there a way we could use multiple riffle "crickets" to look at where point sources of heavy metal pollution are? Or some other way w..." | Read more » | almost 10 years ago | |||
| mathew | "I would go after a test from the dept. of ag in maine. the university of maine has a great how-to. Lead is a standard on the test but I'll bet th..." | Read more » | almost 10 years ago | |||
| donblair | "Great note! I'm just going to paste in some of the comments from our email thread here, for reference: "Note in this photo comparison the expansi..." | Read more » | almost 10 years ago | |||
| donblair | "Yeah! It's fun to picture this device being used in the mode of an old-fashioned 'light meter' held next to an infragram camera and which accounts..." | Read more » | about 10 years ago | |||
| warren | "wow, sweet -- i wonder if this could also be used to calibrate NDVI with a more absolute brightness measure. Ned would know more about this... " | Read more » | about 10 years ago |