A multi-chamber container is a container having more than one chamber for storing respective substances out of contact with one another. It may be desirable to keep the respective substances out of contact with one another during storage of the respective substances, for example if the substances might react or deteriorate over time should they be allow to mix.
Over the years, efforts have been made to improve the design of multi-chamber containers to enable a user to control a ratio of dispensed volumes of plural flowable substances stored in respective chambers of a multi-chamber container. For example, it is known to provide a two-compartment container of flexible material, which enables a user to applying differing magnitudes of force to the two compartments, in an attempt to cause different volumes of flowable substances stored in the compartments to be dispensed.
However, while in theory such a container should provide a user with a sufficient degree of control of the ratio, in reality the degree of control provided often is insufficient. For example, applying a force to one compartment of the container may inadvertently cause some component of force to be applied to the other compartment of the container, so the user cannot be certain as to the relative forces they are applying to the compartments.
Therefore, despite these efforts, a need still exists for multi-chamber container with a structure that better enables a user to control a ratio of dispensed volumes of plural separately-stored flowable substances.