Container and container cap provided with a vent filter medium and filter medium for ventilation of the container

The present invention is cultivated both have a replacement function of the air of carbon dioxide gas and the atmosphere in the container, sterilized cultivation ventilation filter medium for preventing entry of bacteria and ticks to the medium in the container and ensure that its providing cultivating container and culture container cap provided with a filter medium. The cultivation bottles (51) includes a vial body (53), and a cap (55) mounted in the opening (61). Cap (55) includes a cap body (56), and a ventilation filter medium (57). Hole (58) is provided in the cap body (56). Ventilation filter medium (57), together with the pore size has a 50μm following numerous micropores than 0.1 [mu] m, it is mounted in the hole (58).