Filtration for cartridge based beverage forming systems and related methods

A filter assembly for a cartridge-based additive delivery system comprising:

• a filter support frame having a flange and a container lid interface for securing the filter assembly to a container lid, the flange and the container lid interface being at an upper end of the filter support frame;
• a filter element secured to and positioned over the filter support frame such that an upper edge of the filter element abuts the flange and such that the filter support frame extends into an interior space of the filter element;
• and
• an end cap secured to a lower end of the filter support frame to retain the filter element on the filter support frame.

A filter assembly adapted to engage with a lid of a portable beverage container, the filter assembly comprising:

• an inner support frame adapted to extend around an additive cartridge secured to the lid;
• a filter element abutting and extending around the inner support frame;
• and
• an inwardly extending projection formed on the inner support frame adapted to engage a corresponding recess on the lid to secure the filter assembly onto the lid,
• wherein the inner support frame is not adapted for a threaded connection with the lid.