VOC (Volatile Organic Compound) and Formaldehyde concentrations are measured in real time using the VFM200. Fast response time, small size, and portability make it ideal for testing the indoor air quality of homes, businesses, factories, hotels, schools, and other indoor spaces. Paints, varnishes, adhesives, cigarette smoke, pesticides, personal care products, car exhaust, new furnishings, wall coverings, household cleaners, and cooking fuels are all potential sources of VOCs. Acetone, Ethylene Glycol, Formaldehyde, Xylene, 1,3-butadiene, Tetrachloroethene, Hydrogen Sulfide, Ammonia, Toluene, Benzene, Methylene Chloride, Perchloroethylene, and MTBE are examples of chemicals.