1. Remove your KURO-Bō stick from its packaging and activate it by boiling in water for 10 minutes. Allow to cool.
2. Fill your water bottle / jug / carafe with tap water (up to 2L) and insert a single KURO-Bō stick. The KURO-Bō stick will start working immediately, although for best results allow to rest for at least 6 – 8 hours, or overnight, at room temperature or in the fridge.
3. After one month of daily use, boil your KURO-Bō stick for 10 minutes to reactivate it, allow it to cool and simply reuse.
4. After two months of daily use, reactivate your KURO-Bō stick again, allow it to cool and reuse as before. Once filtered, if your water still tastes clean and fresh, reuse. If not, simply recycle your KURO-Bō stick in a number of innovative and environmentally friendly way.