The actual lifetime of the filter cartridge depends on the quality of the local water and the water pressure. For optimal performance of the water purifier, replace the filter cartridge if one of the following situations occurs:
* You have used the filter cartridge for 12 months.
* The volume of purified water decreases substantially.
* The filtered water still has an unpleasant smell or is still turbid after purification.
Tip: We advise you to use the reminder sticker indicate in which month you changed the filter cartridge. On the sticker you can also indicate the month in which you have to change the filter cartridge again, which is 12 months from the current month.