Each filter has a time limit but this one won’t have any. As the filter gets polluted the speed of filtering goes down and the water passes through more slowly. The water passing through the filter where the filtering substance is graphene becomes structured and biological for the human organism and wherein , quite surprisingly, all the harmful substances are withdrawn from water and all the useful microelements are preserved. The experiments with water were made on animals and sportsmen and could be seen on the site of World Health Organisation. The experiments on mice showed that mice which had had their kidneys removed and drank only filtered water appeared to live longer than healthy mice which drank usual water.