Drinkable Sea Water
Before you scream ‘absurd’, let me tell you that I am talking about Puri
– a sea water desalinating bottle. There are several ways to remove
saline from sea water, for example evaporation, vapor-pressure, and
ion-exchange membrane method but all of them are not practical for use
on a life raft or rescue boat and require big equipments. The Puri on
the other hand is a slim portable bottle that works with a pumping
action. Take a look at its video below.