Abstract: There is provided a hermetically closed culture vessel in which miroorganisms are cultivated simultaneously or consecutively on a liquid culture medium and on one or more solid culture media.The culture vessel is transparent, and contains in its lower part a liquid culture medium. From the cap, closing the vessel, there extends downwardly an elongated support for the solid culture medium or media, which is essentially parallel with the central axis of the vessel, which terminates above the liquid culture medium.The growth on the solid culture medium is conveniently inspected from the side of the culture vessel.