Boring :p

90 nm is 90 nanometer is 0.09 microns

They also say good for more than 300 liters/79.25 gallons ... 300 is probably the activated charcoal load

gogo project where they solicit for funds ie http://www.drinkpure-waterfilter.com/

They say their target is below $20 but a donation of $20 doesn't get you a filter

They call it "Drink Pure" but there is already filter by that name, and some kind of drink mix supplement ...

They call it "Drink Pure" but its not a purifier , it doesn't filter viruses

Viruses |Hepatitis A, rotavirus, Norwalk virus |0.004 microns |Water purifier |to 0.004 microns

I'm also curious about the activated carbon contact time , a flow rate of 1 liter per minute, is it good enough

Yes, I am looking forward to seeing this at walmart and rei and other sporting goods stores with a refillable carbon cartridge sawyer mini has some competition