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Special Dr?ger Filter 1140 – A1 B2 E2 K1 Hg NO CO 20 P3 R D. Suitable against vapours and organic gases (e.g. solvents) with boiling point above 65°C; gases and inorganic vapours (e.g. chlorine, hydrogen sulphide, hydrocyanic acid); sulphur dioxide; hydrochloric acid; ammonia; mercury vapours; nitrous gases, nitrogen monoxide; Carbon monoxide; dusts.
