Compatible with Brita Maxtra water filter cartridges, high-purity filters for water filters, set of 6

Case Material: Polypropylene, Polyethylene Terephthalate (Filter) Filter Media Type: Activated Carbon, Ion Exchange Resin Recommended Replacement Interval: 2 months (assuming a total filtration volume of 150L and daily use of 2.5L of water) The time on the individual plastic bag is the production date. The expiration date must be within 6 years of the production date. Economical and Environmentally Friendly: One cartridge can filter 150L of water, equivalent to 75 2L bottled water bottles. Reduces plastic bottle waste.