http://www.thisisredbutton.co.uk/work.html
Having discussed it through with a few others it came about that there was another product than the hippo roller which did actually filter the water. It is by 3 students who appeared on Dragons Den at Christmas, there are many articles on it. I quite like the design however it looks considerably chunky. I also believe there could be more effiecient methods of water filtration as reverse osmosis doesnt cover all pollutants. I believe this could certainly be expanded upon. I am also skeptical as to whether this form of product would be used in somewhere like britain it looks like something which should reside in a mad hatters labratory!
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