Abstract: The present invention refers to a container apparatus for substances soluble in fluid media, for the preparation of mixtures in a single container, and to a method for the preparation of mixtures thereof. The apparatus of the present invention is characterized by: threaded cover, an internal sleeve having a thread on the internal wall, and a recipient or container wall that in its external wall having a matching groove. The method comprising the steps of:operating the closure means together with the fluid media container means through the internal sleeve means, thus allowing communication between the soluble substances and the fluid media inside the closed container,shaking the fluid media with the soluble means; andremoving the closure means and pour the formulated mixture.