How to use

1.

Rinse 3 pieces of charcoal for one liter of water.

2.

Boil the pieces for 5 minutes.

3.

Allow to dry—preferably in the sun.

4.

Fill pitcher / bottle / decanter /canteen with tap water.

5.

Allow bamboo charcoal 1 hour to take effect.

6.

Refill the container as needed for up to 4 weeks.