Taking samples is a key technique in environmental monitoring. Sample collection, when done well, can be cheap, numerous samples can be taken, and many people can participate in sample collection. Lead image from @warren's [work](https://publiclab.org/notes/warren/03-25-2019/water-sampling-workshop-with-a-mega-coqui-kit-with-one-cranston) ## Types of sampling Not all of these types of sampling have pages yet, but we are working together to collect these resources, so please help by editing this page: * [Water sampling](/wiki/water-sampling) * [Soil sampling](/wiki/soil-sampling) * [Air sampling](/wiki/air-sampling) * [Dust sampling](/wiki/dust-sampling) * [Spectrometry sampling](/wiki/spectrometry-sampling) Please add other types of sampling here as well. ## Questions Ask and answer general questions about sampling: [questions:sampling] ...
| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| bsugar | "also, the recommended laser pointer comes with 5 different tops. are those necessary or will the standard tops do? http://www.ebay.com/itm/405nm-..." | Read more » | over 10 years ago | |||
| mathew | "actually, we did buy out all the rest of their stock. " | Read more » | over 10 years ago | |||
| bsugar | "is this the one that is shown in the picture at the top? It's 45mm tall, and 3.5ml. http://www.ebay.com/itm/STANDARD-GLASS-CUVETTE-OPEN-TOP-WITH-..." | Read more » | over 10 years ago | |||
| bsugar | "American Science and Surplus is out of the square glass bottles: http://www.sciplus.com/p/WHITCAP-BOTTLE_48212 I called them and they said that th..." | Read more » | over 10 years ago | |||
| warren | "Check out this post: http://publiclab.org/notes/warren/07-05-2014/oil-testing-spectrometry-workshop-at-fab-10 " | Read more » | over 10 years ago | |||
| JSummers | "Very nice. I suspect that the limitation on accessible wavelengths is due to UV due to absorbance by the plastic optics and will not be improved by..." | Read more » | over 10 years ago | |||
| mathew | "Nathan McCorkle linked to a teardown of a commercial nanodrop: https://www.takeitapart.com/guide/66 an alternate to the droplet appears to be an a..." | Read more » | over 10 years ago | |||
| mathew | "this is super rad! I was bummed when I saw that the nanodrop was patented, so I looked at the patents. There are two earlier devices though: http:..." | Read more » | over 10 years ago | |||
| warren | "Tip on 405nm UV LED which then has wide-band RGB phosphors for visible light: http://www.open-photonics.com/featured-technologies/high-cri-leds " | Read more » | over 10 years ago | |||
| warren | "Alpha oil testing kits now available! http://store.publiclab.org/products/spectrometry-sampling-kit " | Read more » | over 10 years ago | |||
| Paquicamus | "That is great. It's just like a double beam spectrophotometer. Any chance to post some results. For example a 10mg sodium nitrate aqueous solution,..." | Read more » | over 10 years ago | |||
| mathew | "Nice! I'm going to go print one tomorrow. " | Read more » | over 10 years ago | |||
| warren | "Wow, amazing progress! I love the photoshoot. Can you upload the sketchup files etc. in the research note as well? " | Read more » | over 10 years ago | |||
| mathew | "For everyone who wanted a sampling kit, the parts for 20 have arrived. e-mail us and we'll share a private purchase link kits@publiclab.org " | Read more » | over 10 years ago | |||
| warren | "There's been a discussion of the Tellspec here: http://publiclab.org/notes/nemo/10-09-2013/cheap-spectrometer-fundraiser-on-indiegogo There's also..." | Read more » | almost 11 years ago | |||
| warren | "Great similar concept but for tiny quantities, posted at Hackteria's wiki: http://hackteria.org/wiki/index.php/DIY_NanoDrop " | Read more » | almost 11 years ago | |||
| hdias | "It is possible to use the raman spectroscopy (http://en.wikipedia.org/wiki/Raman_spectroscopy) to do the analysis of a sample like this portable sp..." | Read more » | almost 11 years ago | |||
| mathew | "wait, shorter answer-- The bandwidth is the same, but the beam will be wider. " | Read more » | almost 11 years ago | |||
| mathew | "The laser is a diode + a lens. Unfocused it still goes in a pretty straight line for short distances at least. There are all-in-one surface mount ..." | Read more » | almost 11 years ago | |||
| warren | "Huh. do laser diodes have as narrow a bandwidth as a laser? " | Read more » | almost 11 years ago | |||
| eustatic | "cool " | Read more » | almost 11 years ago | |||
| mathew | "I'm really excited about the possibility of re-purposing fish sonar. I'm used to seeing a very rough output from fish sonars of the bottom + a "bi..." | Read more » | almost 11 years ago | |||
| marlokeno | "Markdown: An oil train, presumed to be full of bakken Oil, spilled on tracks between Red Wing and Winona MN along the Mississippi River. I photogra..." | Read more » | almost 11 years ago | |||
| mathew | "I've been trying to find stand-alone diodes, and it seems that there are several chinese manufacturers of 405nm laser diodes on Alibaba that are qu..." | Read more » | almost 11 years ago |