It is a multi-use device for delivered to thirld world countries, first with corn or grain inside. Once the grain is used up, the bag can be reused as a water purifier. Fill the bag with water and put it in the sun. The clear bag uses a Solar Water Disinfection Process (SWDS) to purify the water, as the UV rays and heat kill bacteria. Then the filter located at the bottom of the bag filters out any remaining impurities up to 5nm. The bag can even be strapped to a person’s back for transport or portability. A great idea for areas where clean water is desperately needed.
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