Sennheiser EM 3731-II - 09-09 Instruction Manual download pdf (Page 30)

Page 26 Leica EM CPD030 Operating Manual 09/09

5.11 Removing dried specimen

Close the shut-off valve of the C02 bottle.

Open the screw-on cover of specimen pressure chamber.

Remove specimen holder with dried specimen from pressure chamber for further

processing.

Since the dried specimen is highly hygroscopic, it has to be coated as quickly as

possible with a thin metal- or carbon film to protect it from atmospheric humidity.

If this is not possible, it is recommended to keep the specimen in a desiccator until it

is processed further.

5.12 Switching off the unit

Leave the specimen chamber open. Leave the C02 bottle closed.

Press the MEDIUM IN key. The gas contained in the connection tube escapes

through the open specimen pressure chamber.

Press the MEDIUM IN key again. This will close the medium-inlet valve.

Close the specimen chamber with screw-on cover.

Switch off the main switch located on the unit.

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Sennheiser EM 3731-II - 09-09 Instruction Manual Page 30