The activated carbon stick (or Binchotan) improves the quality of drinking water and allows you to get rid of bottled water (expensive and very unecological). This stick is native to Vietnam and it is an activated carbon made from a variety of holm oak that is very hard and very rich in fiber. It is increasingly used to purify water in a natural way. This coal stick also reduces bad tastes According to the environmental protection agency of the United States, this stick of activated carbon has the properties of fixing many molecules: chlorine, mercury, benzene... It would also allow to free itself from certain residues of insecticides or herbicides (endrins, lindane, methoxychlor...) Usage tips: The coal stick is to be put in a glass bottle or possibly in a stainless steel bottle. After these 6 months, it can be recycled as a deodorant, cat litter or humidity regulator.