Enjoy tap water thanks to Binchotan charcoal! It is a natural filter and zero waste. Activated carbon handmade by a Japanese craftsman according to the ancestral method of carbonization and activation, in a traditional oven, from Ubamegashi oak branches whose high density is essential for quality. A zero waste alternative to plastic bottled water. Sold in bulk (without packaging or blister). Delivered with its instructions (in French) on recycled paper in A6 format. Declinations: - Bottle 0.5-1 l.: This stick is ideal for bottles of 0.5 to 1 liter. (20 grams*) - Jug 1-2 l.: This stick is ideal for decanters and pitchers from 1 to 2 liters. (35 grams*) - Fountain 0.5-1 l.: Ideal size for a tap water fountain up to 3 liters. (50 grams*) The “calibrated” sticks are all less than 3.5 cm (or even 3 cm) in diameter and are distributed according to their weight (tolerance of 20%).