Firmly grasp the Inner Press. Rotate the cartridge (lefty-loosey) until it separates from the Inner Press.
Firmly grasp the Inner Press. Insert cartridge into the bottom of the Inner Press.
03 ROTATE AND LOCK
Rotate cartridge (righty-tighty) until you feel it CLICK and LOCK INTO PLACE. If the cartridge is not locked, it can fall off during use.
TASTE THE RIVER
The silicone One-Way Valve prevents liquid from reversing direction and flowing back into the filter Cartridge. Allowing the use of electrolytes, drink mixes and other beverages with your Grayl GeoPress® Filter & Purifier Bottle.
COMPATIBILITY. Only compatible with 2nd Generation cartridges first sold in April 2023 that include a new "core" and "flow channel" design (horizontal vents). 1st Generation cartridges are not compatible with the Drink-Mix Valve.