Leica Biosystems CM1850 UV - Manual (Page 51)

51 Leica CM1850 UV – Cryostat
10.2 Optional accessories
10.2.1 Mobile heat extractor
Specimen freezing with the freezing shelf can be accelerated by the addi-
tional use of a heat extractor.
• Store the heat extractor in the cryochamber.
• Place it on the specimen surface to accelerate freezing.
• Remove it once the specimen is entirely frozen. It is recommended to
precool the heat extractor in liquid nitrogen or other refrigerant.
It is recommended to precool the heat extractor in liquid nitrogen
or other refrigerant.
10.2.2 Thermal block
The thermal block (8) facilitates the removal of the frozen specimen from the
specimen disc.
Keep the thermal block outside the cryochamber at room tempera-
ture. Place it in the cryochamber only for specimen removal.
• Place the cap (9) on the required side, so that the appropriate location
hole for the specimen disc is visible.
• Insert the shaft (6) of the specimen disc (5) in the appropriate location
hole (7) at the top or bottom of the thermal block.
• After about 20 seconds, the frozen specimen can be removed from the
specimen disc with forceps.
• If the cap is too loose, readjust it with the small screw (10). Do not over-
tighten the screw.
• Once the specimen is removed, take the thermal block out of the cold
cryochamber.
10. Ordering information, optional accessories
Fig. 37
5
6
7
8
9 10
Fig. 38