Abstract: A double-chambered container for liquids comprising a container on which a sealing member, showing a removable disposable bottom and which is able in turn to receive tightly an open bottomed tubular cartridge so that a hermetically closed chamber is formed, can be screwed, is described. The tubular cartridge is also equipped with a cap ending with a removable safety ring. Tearing off the safety ring the removable disposable bottom of the sealing member can be removed, connecting the chamber formed by the tubular cartridge and by the sealing member. The container according to the present invention is particularly suitable for tightly preserving liquids to be mixed upon use.