estinamir

Why not lifestraw

This simple filter called lifestraw last for 1 year and costs around $20. It can even make pool water drinkable.

https://www.youtube.com/watch?v=as0tZxByp5A

https://www.youtube.com/watch?v=LikhvralK9I
1 Reply

Harry Sangree
moderator
This sounds promising. Please go to the challenge homepage, register as a solver, and submit your solution.
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