»Kishu Binchotan« is a special activated coal made from Japanese holm oak. It is fired by manual labour and is activated. By the compound of activated coal and a unique pore structure, Binchotan cleans the drinking water from chlorine, pesticides, herbicides and solvents, as for example benzene. Furthermore, the water is ionised. The size of the carbon pieces is perfectly matched to our water carafes.