Abstract: A versatile, small-mouthed container is readily dis-assemblable and re-assemblable to provide direct access to its internal cavity. Portions are mutually sealingly connectable by an annular coupling ring with two sets of threads, one each respectively to mate with threads on an upper and a lower cylindrical container portion. More than two cylindrical portions and more than one coupling ring can allow assemblage of larger containers and of containers of reconfigurable capacity. Some coupling rings provide for fluid communication between adjacent body portions and others provide a degree of blockage. Inserting or removing a partitioning disk into the ring can change a ring's degree of blockage. Various partitioning disks are provided with different degrees and types of blockage, when not deployed, the disks can be retained at the base of the container. Recessed latches prevent inadvertent opening at specific coupling interfaces.