Cryo electron microscopy (cryo EM)
Ultimate cryogenic tomography for transmission electron microscopy (TEM) demands that a specimen holder be capable of tilting to high angles, have a large field of view, and achieve Ångstrom resolution while exhibiting exceptionally low drift. The optimal solution for these demanding requirements is the Model 2550 Cryo Tomography Holder. This single-tilt liquid nitrogen cooled, cryo-transfer TEM specimen holder achieves a base temperature of better than -170°C.
To protect the specimen from contamination during cryo transfer to the TEM, the tip containing the specimen is retracted into a cryogenically cooled shield located within the body of the holder. During transfer and imaging, the specimen and shield are maintained at cryogenic temperature. Through unique design, the cooled tip and shield are thermally isolated from the holder body which maximizes resolution and minimizes drift. In addition, this mechanism both dampens environmental vibrations induced into the specimen holder and reduces the time required to reach base temperature.
Innovative dewar design
An efficient liquid nitrogen dewar provides long working times between fills. Its unique configuration and lightweight design provide excellent stability, even at high tilt angles.