Technical paper . ^\J \ ? _<«j 1. TYPES OF BREATHING APPARATUS. 27 ABSORBENTS FOR GASES. The Bureau of Mines and the Chemical Warfare Service of theArmy experimented with many absorbents for poisonous or toxicgases in general and with special absorbents for individual gases orclasses of gases that might be used in warfare. The tests thus in-cluded most of the gases commonly met in the industries. The more useful absorbents are briefly described below: CHARCOAL. Charcoal, properly made, may be considered the one universal ab-sorbent for gases, as it absorbs to some degree every gas, both tox
Technical paper . ^\J \ ? _<«j 1. TYPES OF BREATHING APPARATUS. 27 ABSORBENTS FOR GASES. The Bureau of Mines and the Chemical Warfare Service of theArmy experimented with many absorbents for poisonous or toxicgases in general and with special absorbents for individual gases orclasses of gases that might be used in warfare. The tests thus in-cluded most of the gases commonly met in the industries. The more useful absorbents are briefly described below: CHARCOAL. Charcoal, properly made, may be considered the one universal ab-sorbent for gases, as it absorbs to some degree every gas, both toxicand nontoxic. Its capacity and activity against any gas varies withthe material from which it is made, but more especially, and oververy wide limits, with the process of manufacture. However, char-coal has such a small capacity for absorbing certain gases met, bothin warfare and in the industries, that it is of no practical value as anabsorbent for them. Among these gases are carbon monoxide andammonia. The properties of charcoal,
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectminesandmineralresou
