A flexible multicompartment container provided for storage and mixing together of a at least a first and a second single solution. Each single solution is stored in a separate compartment (1, 2) of the container. The compartments are separated by means of seals (5, 6) rupturable by manipulation of the container to thereby mix the contents together in a mixing compartment for delivery. The first compartment (1) is filled to a first filling degree, FD1, and the second compartment is filled to a second filling degree, FD2. The first filling degree is larger than the second filling degree. The filling degree in the mixing compartment, FDMC, is larger than the filling degree in the second compartment.