77210163GB Issue 3
39
Wait for a few minutes then press
[CRYOBAR TEMP] to
check that the temperature of the peltier element in the
Cryobar is between -50°C and -60°C i.e. approximately
20°C below the normal Cryobar temperature,
ThE CRYOBAR OR PELTIER ELEMENT ARE EXTREMELY COLD AND
CAN CAUSE fROSTBITE. DO NOT TOUCh ThEM wITh BARE hANDS
Use the table in Appendix C to select the suggested temperature for
the specimen to be cut. To set the temperature, keep
[wORKING
TEMP] pressed while using the [+] or [–] push-buttons to set the
Chamber temperature to the required temperature.
There are several methods of embedding a specimen for work on a
cryotome. The following instructions describe one suggested method.
Take a clean Cryocassette that has been held at room temperature. Apply a layer of
specimen embedding medium, such as Cryomatrix
™
or Cryochrome
™
, to the grooved
side of the Cryocassette, then lift the heat sink sufficiently to allow you to place the
Cryocassette on the Peltier platform of the Cryobar.
Cryomatrix
™
and Cryochrome
™
are proprietary Thermo consumables
When the mountant starts to freeze, place the specimen directly
from the cutting-up board on to the mountant and press down lightly
to eliminate any entrapped air.
Add a final coat of mountant and allow it to freeze.
Lower the heat sink gently over the specimen. Take care not to
touch the specimen. Allow the specimen and mountant to freeze
until both are opaque and firm.
CHAMBER CONTROLS
CRYOBAR
BOOST
WINDOW
LOCK
LAMP
CRYOBAR
TEMP
WORKING
TEMP
IMMED.
DEFROST
IMMED.
FUMIGATE
CANCEL
DEFROST/
FUMIGATE
TEMPERATURE °C
+ -
Summary of Contents for Cryotome
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