Cryotransfer holder and workstation

A cryotransfer holder for mounting a sample held at cryogenic temperature in an electron microscope, comprising:

• a sample holder;
• a cylindrical dewar comprising:
• an outer dewar housing, and
• an inner dewar vessel thermally connected to said sample holder;
• wherein said inner dewar vessel is configured to hold a liquid cryogen;
• a thermal conductor thermally connected to said sample holder;
• and
• a thermal conductor housing having a housing center axis;
• wherein said cylindrical dewar further comprises:
• a diameter,
• a length,
• a cylinder axis;
• and
• an outer dewar housing attached to said thermal conductor housing;
• wherein said dewar cylinder axis is aligned with said thermal conductor housing center axis;
• wherein said thermal conductor passes through said thermal conductor housing and is aligned with said thermal conductor housing center axis, and wherein said inner dewar vessel has a central opening such that said thermal conductor passes through said central opening without touching said inner dewar vessel.