Each filter lasts around 3 months, equivalent to 200 litres of water.
The filter remains active as long as it is wet.
Filters 99.9% of biological contaminants.
Caution: does not work with seawater.
How to replace the filter:
1- Unscrew the cap,
2- Unscrew the used filter,
3- Remove the cover from the new filter,
4- Screw the filter onto the cap in place of the used filter.
5- Fill the bottle,
6- Turn the bottle upside down to soak the filter for 10 to 15 minutes.