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Z31980_00_03
Safety
The following pollutants are used:
3.6 Signage
The following symbols and information signs can be found in the work area. They refer 
to their immediate surroundings.
i
Note: The identification and placement of warning labels are included in the manual. The 
laboratory supervisor is responsible for ensuring that all the warning labels are main-
tained in their proper place any time that the device is used.
Electrical Voltage
Helium inert gas Helium inert gas may cause suffocation at high concentra-
tions. Disposal of the empty gas cylinders must be performed 
by a specialist disposal company. 
Nitrogen gas Nitrogen gas may cause suffocation at high concentrations. 
Disposal of the empty gas cylinders must be performed by a 
specialist disposal company.
Coolants When released, coolants develop decomposition products 
which are hazardous to the environment. Maximum care and 
caution are required when handling coolants. Always observe 
the safety data sheet issued by the manufacturer. Ensure that 
personnel handling coolants are regularly informed about 
potential dangers and are instructed in the safe handling of 
coolants. 
Cleaning liquids Cleaning liquids incorporating solvents contain toxic sub-
stances. They must not be allowed to escape into the environ-
ment. Disposal must be carried out by a specialist disposal 
company.
Only qualified electricians are permitted to work in a work 
room marked by this sign. unauthorized persons must not 
enter the workplaces thus marked and must not open the 
marked cabinet.