The GC MultiGas is the ideal system for people who are concerned about high levels of Formaldehyde, VOCs, Chemicals, and Odors. It's four "gas stage" filter cartridges put the highest-quality granulated carbon and potassium permanganate impregnated alumina pellets to work against a wide range of gases, odors, and chemicals. The "gas stage" filters utilize two-stages, Adsorption and Chemisorption, to remove pollutants. It is also effective at removing the lung irritant Ozone.
The GC MultiGas also has HEPA filtration. The H11 HyperHEPA filter delivers a minimum Total System Efficiency of 99% for particles 0.3 microns and larger and 95% for ultrafine particles down to 0.003 microns. Some air purifiers claim to be effective against gases. Others claim to be effective against particles, but the IQAir GC MultiGas integrates the best of both technologies together into a single system that provides superior filtration of gases and particles. This is the #1 rated air purifier for those with multiple chemical sensitivity (MCS).