4 Safety | 4.3 Warning Labels and Lights
ZEISS
WARNING
Fire hazard
Fire risk due to concentration of oxygen in liquid nitrogen.
4
Cover the dewar so that the evaporating nitrogen can escape, but the penetration of air is
inhibited and no flammable material can fall into the dewar.
4
Store and transport liquid nitrogen only in suitable dewars.
4
Do not smoke or have open fire in the same room the dewar is located.
NOTICE
Damage of components inside the chamber
In case the chamber is vented before the Cryo Trap is warmed up, the water from ambient air
will condense at cold surfaces inside the chamber.
4
Do not vent the specimen chamber as long as the dewar is filled with liquid nitrogen.
4
Before you vent the specimen chamber, wait until the dewar is empty and the cooling rod
and cooling plate are warmed up to room temperature.
4
Always exchange the specimen via airlock.
4.3 Warning Labels and Lights
All locations that may pose specific hazards are marked with additional warning labels (pic-
tograms) on the Microscope System. These warning labels indicate potential hazards and form
part of this Instruction Manual. They are to be kept in clean and easily legible condition. Damaged
or illegible warning labels must be replaced immediately. Always consider all warning labels on
the Microscope System.
4.3.1 Warning Label on Cryo Trap Dewar
WARNING
Liquid Nitrogen
Risk of freeze burns, suffocation or explosions.
8
Instruction Manual ZEISS Cryo Trap | en-US | Rev. 2 | 346000-8166-000
Summary of Contents for Cryo Trap
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