Ductless Filter Specifications

About Filtco Replacement Filters
Our media and manufacturing processes have been perfected over several years to offer superior construction and performance. Assembly of our activated carbon filters is conducted under strictly controlled conditions.
Filtco replacement filters follow the recommendations of major manufacturers. Our replacement filters meet all minimum standards required by the original manufacturer and often go above and beyond these standards.
Filtration Efficiency
Our filters deliver an efficiency of 99.9% during their service life (to saturation), for all chemically active molecules/chemical materials, including most chemicals with a molecular weight above 30 and a boiling point above 60°C.
We maximize the efficiency of each carbon filter by assuring the quality of carbon media, the cartridge casing and the manufacturing method.
Certain other chemicals also are well adsorbed by carbon filters because of their molecular size and structure. Request the Chemical Absorbency Listings for Filtco activated carbon filters.
Carbon Media
Filtco's activated carbon feedstock is carefully sourced. All additives are thoroughly researched. See vapour handling for more information. Each activated carbon media batch is tested to verify optimized retention capacity and assure superior performance of finished carbon filters.
Carbon Filter Casings
Manufactured from reinforced thermoplastic, Filtco carbon filter casings are lightweight yet sturdy for ease of handling and installation. The casings provide high impact strength, excellent dimensional stability and superb chemical resistance. Casing geometry is configured with numerous chambers to help prevent settling or shifting of carbon media.
Carbon Filter Assembly
Each casing is filled with activated carbon media and tightly packed to avoid settling during shipment. Casings are then weighed to verify the proper amount of media needed to achieve target vapour retention capacity.
Filtco models that include pre-filters (particle or HEPA filters) come with no additional assembly. See Manufacturers Filter Types for more details. The assembled carbon filter, with attached pre-filter (if applicable), is then packed into a heat sealed plastic bag and durable box for shipping.
Filtco carbon filters comply with the requirements of British Standard BS7989:2001, European Standard AFNOR NF X 15-211 and U.S. standards.
Filter Types


Designed to oxidize formaldehyde and glutaraldehyde fumes. It is widely used in hospital pathology laboratories.


Removes vapours from dilute ammonia solutions and to remove low molecular weight amines.


Neutralizes volatile inorganic acid vapours.


HEPA Filter, powders and particulates.


Pre-filter for particulates.


Mercury Vapours.


Iodine and methyl iodide vapours. It is frequently used for iodination reactions with low level radioactive iodine.


Removal of hydrogen cyanide. Many cyanide compounds will evolve HCN gas if acidified, so this filter is normally specified if working with any cyanide compound.


Designed to handle chemicals normally used in a university level chemistry curriculum.


The most widely used filter in the range, primarily for solvent, organic, and alcohol removal.


Designed to remove hydrogen sulphide and low molecular weight mercaptans.


Universal filtration.


Designed for military applications involving war gases.


Organic Vapours Carbon + HEPA Filter.


Diethyl ether is adsorbed on activated carbon, but because of its low boiling point, local heat adsorption can reduce the capacity of the filter. Special impregnation allows a chemical reaction which increases the filter capacity.