Colour Mark | Type | Application | Class | Max allowed gas Concentration | Standard | |
A | Organic gases and vapours (boiling point >65°C) | 1 | 1000 ml/min³ | (0.1 Vol %) | EN141 or EN14387 | |
2 | 5000 ml/min³ | (0.5 vol %) | ||||
3 | 10000 ml/min³ | (1.0 vol %) | ||||
B | Inorganic gases and vapours (not CO) i.e. Chlorine, H2S, HCN. | 1 | 1000 ml/min³ | (0.1 Vol %) | EN141 or EN14387 | |
2 | 5000 ml/min³ | (0.5 vol %) | ||||
3 | 10000 ml/min³ | (1.0 vol %) | ||||
E | Sulphur Dioxide and acidic gases and vapours | 1 | 1000 ml/min³ | (0.1 Vol %) | EN141 or EN14387 | |
2 | 5000 ml/min³ 10000 | (0.5 vol %) | ||||
3 | ml/min³ | (1.0 vol %) | ||||
K | Ammonia and organic ammonia derivatives | 1 | 1000 ml/min³ | (0.1 Vol %) | EN141 or EN14387 | |
2 | 5000 ml/min³ | (0.5 vol %) | ||||
3 | 10000 ml/min³ | (1.0 vol %) | ||||
AX | Organic gases and vapours (boiling point <65°C) | - | gr.1 100 ml/min³ max 40 min gr.1 500ml/min³ max 20 min | EN371 | ||
gr.2 1000 ml/min³ max 60 min gr.2 5000 ml/min³max 20 min | ||||||
NO-P3 | Nitrogen Oxides e.g. NO, NO2, NOX | - | Maximum allowed time of use 20 minutes | EN141 or EN14387 | ||
Hg-P3 | Mercury Vapours | - | Maximum allowed time of use 50 hours | EN141 or EN14387 | ||
CO | Carbon Monoxide | - | Local guide lines | DIN 3181 | ||
Reactor P3 | Radioactive Iodine | - | Local guide lines | DIN 3181 |
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