The Public Lab Store Starter kits for DIY environmental science

Infragram DIY Filter Pack


A piece of blue and red filter which you can use to turn your webcam or cheap point-and-shoot into an infrared/visible compositing "multispectral" camera. The filter allows you to take an infrared photo in the "red" channel of your camera, and a visible image in the "blue" channel. These can be used to measure photosynthetic activity; read more about the technique at and

Post-process your photos at , the free and open source image processing website which composites your images and helps you to assess plant health. See some example images at left.


Installing your filter:

Be aware that this is a relatively permanent change to your camera -- you may not want to convert your expensive DSLR, for example! We've also found that not every webcam will produce good infrablue images -- while all the legit point & shoot cameras are fine, we're keeping track of which webcams do and don't work well on this page:  (if you're doing your own experiments, as many already are, please add your findings there!) Additionally, we have discovered that a Rosco Red Fire filter works better for a larger variety of cameras and we have begun moving to produce red with blue filter packs.


(The lens assembly removed and the infrared-blocking filter being extracted. Typically the IR filter that needs to be removed is glued to the backside of the lens assembly.)

Get involved in the process today by signing up on our "plots-infrared" discussion list:


Want to carry our kits in your own store? Order wholesale! Contact the kits team.

Community Science Forum: Frac Sand

Our quarterly print publication has a new name, and a wider scope. It's now called the Community Science Forum. This issue is focused on frac sand, and in particular on the work being done in western Wisconsin by community groups concerned about air and water quality impacts of mining operations there.

Usually $5, we're offering the new issue at an experimental price of $2 plus shipping.

Event Packs

Do you have an event planned and would like to introduce Public Lab to your community? Order a $10 Event Pack with GMF and foldout maps!


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