Sample preservation container

A sample preservation container comprising:

• a container main body part formed to have a shape of a container or a tube with a predetermined length, an outer diameter, and an inner diameter, wherein the container main body part is formed to have one open side and has an accommodation space provided on an inner side thereof and configured to accommodate a predetermined sample or fluid;
• and
• a lid part having a portion on a front side thereof, wherein the portion is partially inserted into and coupled to one side of the container main body part so as to seal the accommodation space from an outer side of the container main body part, wherein:
• the container main body part has a coupling nut section provided on the one side thereof, wherein the coupling nut section has a concave portion and a convex portion provided on an inner surface thereof, wherein each of the concave portion and the convex portion is formed to have a spiral shape so as to rotate around a longitudinal central axis of the container main body part, and
• the lid part comprises:
• a coupling bolt section having an outer circumferential surface formed to have a shape corresponding to a shape of the inner surface of the coupling nut section, wherein the outer circumferential surface of the coupling bolt section contacts the inner surface of the coupling nut section so as to perform coupling between the container main body part and the lid part;
• and
• a lead section located at a front side of the coupling bolt section and formed to have an outer circumferential surface, wherein at least a part of the outer circumferential surface contacts the inner surface of the container main body part so as to seal the accommodation space.