-
- Amaircare Odor and
Gas
Adsorbency
- Ratings Chart
-
- The Chart below indicates
a gas or odor name followed by an index number. Use the following index
number explanations to interpret the effectiveness for a particular gas or
odor.
- Category 4.
High
capacity for all materials in this category. One pound of odor and gas
adsorbing media takes up to 20% to 50% of its own weight of this gas. This
category includes most of the odor causing substances.
Category 3.
Satisfactory capacity for all items in this category, these constitute good
applications but the capacity is not as high as for Category 4. One pound of
odor and gas adsorbing media takes up about 10% to 25% of its weight of this
gas.
Category 2.
Includes substances which are not highly adsorbed but which might be taken up
sufficiently to give good service under the particular conditions of operation.
Category 1.
Adsorption capacity is low for these materials. Activated carbon can not
satisfactorily remove them under normal circumstances.
Note: Some
of the contaminants listed in the table are specific chemical compounds, some
represent classes of compounds and others are mixtures of variable composition.
Activated carbon's capacity for odors varies with the concentration of the gas
in the air, humidity, temperature and velocity of air moving through the media.
The numbers given represent average conditions and might vary in specific
circumstances. The values in the table have been assembled from many sources
including laboratory tests and field experience. This table should be used as a
general guide only.
*Straight activated
carbon does not have much capacity for some reactive gasses, such as ammonia and
formaldehyde. In some cases where the gas is chemically reactive, appropriate
impregnated activated carbon can be recommended.
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