http://www.black-blum.com/products/eau-good-filter-water-bottle/
Binchotan active charcoal has been used in Japan as a water purifier since the 17th century. It reduces chlorine, mineralises the water and balances the pH. The binchotan active charcoal can be used for up to 6 months and amazingly recycles for many different uses after this.
http://www.selfpublishbehappy.com/bookclub/
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