Airtech offers Activated Carbon Air Filters. Airtech has been awarded ISO 14644 certification. Activated Carbon Air Filters is most commonly used to remove odorous gases and irritating vapours from the air by adsorption. Activated Carbon Air Filters consists of extremely thin layers of gas molecules adhere to the surfaces of the carbon granules with which they come in contact. Activated Carbon Air Filters are applicable to most conditions where odours, fumes, smoke or gases affect personal comfort or product integrity. These are used as convention halls, museums, libraries, entertainment centres, sports arenas, gymnasiums, locker rooms and other areas where concentrated "people odours" can become objectionable.