Container, fluid handling device, and freeze-drying method

A container for producing or housing a freeze-dried material, the container comprising:

• a bottom wall;
• a side wall;
• a support part for supporting a fluid in such a way that the fluid does not contact the bottom wall and that area from which gas can be generated by sublimation from a lower portion of a frozen fluid is increased to promote freeze-drying, the fluid being a fluid to be freeze-dried;
• and
• at least one vent disposed in the bottom wall or in at least one portion of the side wall, the portion being located below a top of the support part,
• wherein the container is configured to directly contain the fluid or the freeze-dried material, and wherein an area of a space defined by inner surface of the side wall in plan view is within a range of 8.0 mm2 to 16 mm2.