Wesemann DB-DG03, User Manual, Page: 56 / 92

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User Manual | Laboratory Fume Cupboard | Media system: Armatures
the colours in Zones 2 and 3.
5.2.5 Toxic gases
The colour black of Zone 1 indicates that it refers to the flow substance toxic gases. Which toxic gas it is can be
recognized by the colours in Zones 2 and 3.
5.2.6 Vacuum
The colour grey of Zone 1 indicates that it refers to the flow substance vacuum. Which vacuum it is can be
recognized by the colours in Zones 2 and 3.
N
2
Nitrogen N
2
O Nitrous oxide
SA Synthetic air 80 / 20 CA Compressed air
O
2
Oxygen CO
2
Carbon dioxide
RA Control air BA Breath (air)
CB Carbogen (CO2 + O2) Kr Krypton
Xe Xenon Ne Neon
Ar
Argon
He
Helium
NH
3
Ammonia NO
2
Nitrogen dioxide
NO Nitrogen monoxide H
2
S Hydrogen sulphide
AsH
3
Arsine PH
3
Phosphine
HCl Hydrogen chloride SO
2
Sulphur dioxide
CO Carbon monoxide COCl
2
Phosgene
Cl
2
Chlorine