Personal UV Purifiers
Campaign: Can we make drinkable water from other sources?
The process for purifying water with it is almost dummy-proof (if you can tell the difference between a solid green light and flashing red lights), and is an \'instant on\' design. Simply remove the outer case and immerse in up to 16 oz of water until the device\'s sensors are covered, and the UV light comes on automatically. The internal timer lets you know when the process is complete, which is 48 seconds, according to SteriPen. Source: https://www.treehugger.com/gadgets/freedom-uv-water-purifier-steripen-lightweight-rechargeable-and-simple-use.html
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