Revos is a water filtering system which is driven by means of a hand pump. A filter system where non-drinkable water is made drinkable. The filter consists of a sand, carbon and reverse osmosis (R.O.) filter. The R.O. filter makes this filter a little more unique, because it ensures that even the salt is removed from the water. It is a filter that can be used for disaster areas, life boats manufacturers but also for the survival trips. It is a small and compact product, which produces a maximum of 8L drinkable water per hour.