The VFM200 is a measuring device for volatile organic compounds (VOCs) and formaldehyde that measures concentrations in real-time. It features a fast response time, is compact, and easy to transport, making it excellent for checking indoor air quality in homes, offices, factories, hotels, schools, and other indoor environments. Possible sources of VOCs include paints, coatings, adhesives, cigarette smoke, pesticides, personal care products, vehicle exhaust, new furniture, wall coverings, household cleaners, and cooking fuels. The chemicals include acetone, ethylene glycol, formaldehyde, xylene, 1,3-butadiene, tetrachloroethylene, hydrogen sulfide, ammonia, toluene, benzene, methylene chloride, perchloroethylene, and MTBE.