IPPINKA Kishu Binchotan Water Purifier Charcoals Filter (Three 6" Charcoal Sticks (No Carafe)) Japanese binchotan charcoal from Kishu, Japan is the highest grade Absorbs impurity from water - resulting in pure, great tasting water 3 long sticks (15cm), ideal for carafes 1 stick for up to 2L of water Reactivate charcoal every two weeks by boiling for 10 minutes and letting dry