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Activated Charcoal Filters

Hoods — Purification Filters (Activated Charcoal)
  • Remove a wide range of chemicals from airstream to allow ductless exhaust fume purification
  • Bonded-charcoal design minimizes voids, improves efficiency, reduces particle sloughing
  • Improves conditions for technicians working with chemicals or applications that create fumes
  • Custom sizes available—call Terra with your specifications
These carbon filters, manufactured from coconut-shell based activated charcoal of 8-12 mesh size, are used to remove a broad range of organic compounds and solvent fumes. Special processing ensures a large surface area per gram weight. They function through physical adsorption of molecules in the pores of the activated charcoal by van der Waals forces.

Carbon filters are designed for use in the Terra systems listed in the ordering table below (other sizes can be custom ordered). Typically, each Terra ductless exhaust system includes a filter housing that holds the desired purification filter along with any prefilter or postfilter required. For optimal filter effectiveness, Terra recommends use of a prefilter to extend the time that the exhaust fume is exposed to the filter medium. In particle-sensitive environments, a HEPA or ULPA filter may be added.

Note: Terra recommends thorough testing of filter performance in each application prior to exhaust release, and assumes no responsibility for damage or injury that may result as a consequence of improper filter selection or use.

Activated Charcoal Filters
W" x L" x T" (mm)
13 x 27.75 x 1.75
(330 x 705 x 44)
23.25 x 17.25 x 2
(591 x 438 x 51)
12 x 12 x 3
(305 x 305 x 76)
For Terra Product: Universal Hood
Environment Control Modules
Filter/Blower Modules
Fume Hoods
Ductless Mini-Hood
Ductless Work Station
Call for custom sizes!
Filter Type Cat. # Price Cat. # Price Cat. # Price
Activated Carbon 1716-00A $ 473 1681-50 $ 643 1701-90A $ 406

Chemical Filtration Table for Activated Charcoal (AC)

The table below indicates the filter recommended for use with a wide range of chemicals commonly found in laboratory and manufacturing environments. For each chemical, it also provides an estimate of filter capacity.

Unless otherwise specified, filter efficiency with the chemical indicated approaches 100%. An asterisk (*) indicates poor adsorption by any filter; use of the specified filter is not recommended with these chemicals except where they occur in low concentrations, and frequent exhaust testing is advised.

Filter capacity is given as the equilibrium saturation capacity, a standard test procedure for activated carbon (ASTM-D3467). The capacity is expressed as the final filter weight at saturation as a percentage of initial filter weight. The actual capacity obtained will depend on the conditions of use (concentration of contaminant feed, temperature, humidity, etc.).

Note: All data below represent typical, not guaranteed, test results. Terra recommends thorough testing of filter performance in each application prior to exhaust release, and assumes no responsibility for damage or injury that may result as a consequence of improper filter selection or use.

Chemical Filter Satur. Cap. (%)
Acetic AC 33
Acetic anhydride AC 33
Acrylic AC 40
Butyric AC 40
Caprylic AC 40
Carbolic AC 40
Lactic AC 40
Osmium tetroxide AC 40
Palmitic AC 40
Phenol AC 40
Proprionic AC 40
Valeric AC 40
Alcohols x x
Amyl AC 40
Butyl AC 40
Cyclohexanol AC 45
Ethyl AC 32
Isopropyl AC 40
Methyl (methanol) AC 32
Propyl AC 40
Aliphatic Hydrocarbons
Acetylene AC 20
Iso-butane AC 10
Butylene AC 10
Butadiene* AC --
Cyclohexane AC 35
N-decane* AC --
Ethane* AC --
Ethylene* AC --
N-heptane* AC --
Heptylene* AC --
Hexane AC 35
Hexylene* AC --
Methane* AC --
N-nonane* AC --
N-octane* AC --
N-octylene* AC --
Pentane AC 26
Propane* AC --
Propylene AC 10
Chemical Filter Satur. Cap. (%)
Aromatic Hydrocarbons
Benzene AC 40
Napthalene AC 47
Ninhydrin AC 47
Styrene monomer AC 47
Toluene AC 47
Toluidine AC 47
Xylene AC 40
Butyl acetate AC 40
Cellosolve acetate AC 45
Ethyl acetate AC 40
Ethyl acrylate AC 45
Ethyl formate AC 40
Isopropyl acetate AC 45
Methyl acetate AC 40
Methyl acrylate AC 45
Methyl formate AC 40
Aldehydes & Ketones
Acetone AC 32
Acrolein AC 32
Benzaldehyde AC 40
Butyraldehyde AC 32
Caproaldehyde AC 40
Crotonaldehyde AC 40
Cyclohexanol AC 40
Diethyl ketone AC 32
Dipropyl ketone AC 40
Mesityl oxide AC 40
Methyl butyl ketone AC 40
Methyl isobutyl ketone AC 40
Propionaldehyde AC 32
Valeraldehyde AC 40
Valeric aldehyde AC 40
Amyl AC 35
Butyl AC 35
Cellosolve AC 40
Dioxan AC 45
Ethylene oxide AC 20
Isopropyl AC 25
Methyl cellosolve AC 45
Propyl AC 30
Chemical Filter Satur. Cap. (%)
Bromine AC 53
Butyl chloride AC 40
Carbon tetrachloride AC 65
Chlorine AC 20
Chlorobenzene AC 53
Chlorobutadiene AC 40
Chloroform AC 60
Chloro picrin AC 65
Chloro nitropropane AC 60
Dibromoethane AC 60
Dichlorobenzene AC 60
Dichlorodifluoromethane AC 20
Dichlorodifluoroethane AC 40
Dichloro ethyl ether AC 53
Dichloromethane AC 53
Dichloromono-fluoromethane AC 20
Dichloropropane AC 53
Dichlorotetra-fluoroethane AC 20
Ethyl bromide AC 20
Ethyl chloride AC 20
Ethylenechlorohydrin AC 40
Ethylene dichloride AC 53
Fluorotrichloro-methane AC 50
FREON®(BP> -20°C) AC 45
Iodine AC 55
Iodoform AC 53
Methyl bromide AC 25
Methyl chloride AC 20
Methyl chloroform AC 45
Methylene chloride AC 45
Monochlorobenzene AC 45
Paradichlorobenzene AC 45
Perchloroethylene AC 45
Propyl chloride AC 40
Tetrachloroethane AC 53
Tetrachloroethylene AC 53
Vinyl chloride AC 20
Sulfur Compounds
Carbon disulfide AC 20
Dimethyl sulfate AC 50
Tetrahydrothiapene AC 40
Chemical Filter Satur. Cap. (%)
Nitrogen Compounds
Aniline AC 40
Diethyl aniline AC 53
Indole AC 53
Nicotine AC 40
Nitrobenzene AC 53
Nitroethane AC 53
Nitromethane AC 40
Nitropropane AC 40
Nitrotoluene AC 53
Urea AC 53
Uric acid AC 53
Adhesives AC 40
Camphor AC 40
Carbon monoxide* AC
Carbon dioxide* AC
Citrus fruits AC 40
Cooking odors AC 40
Deodorizers AC 20
Detergents AC 40
Leather AC 30
Ozone AC 30
Perfumes AC 30
Gasoline AC 40
Resins AC 30

File Type File Name Publication Date
Tech Resource (PDF) Charcoal Filter Life
Unlike HEPA and ULPA particle filters, activated charcoal filters create no additional backpressure when they near the end of their service life. So when do you replace them? Here's how to tell.
Tech Resource (PDF) Chemical Filtration Table
This document shows the recommended air filter to use when working with chemicals commonly found in laboratory and manufacturing environments. An estimate of filter capacity is also documented, to help plan for replacement intervals.
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