Activated Charcoal Filters

• 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

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.

Chemical Filtration Table for Activated Charcoal (AC)

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.