- Unscrew the stopper
- Fill warm water up to two-third of the capacity.
- Expel the air by pressing the bottle gently.
- Pull the stopper and tight it.
- Bottle is ready for use.
- Do not use boiling water.
- Keep one third of the bottle empty.
- After ﬁlling press gently to expel air.
- Stopper should not be loose.
- When not in use keep the empty bottle upside down after removing the stopper.
- Avoid mishandling by children