The VFM200 is a voc/ formaldehyde meter which measures voc (volatile organic compound) and formaldehyde concentrations in real-time. Fast response time, compact, easy-to-carry, and excellent for Checking the Indoor air quality of homes, offices, factories, hotels, schools and other Indoor environments. Potential sources for vocs include paints, finishes, adhesives, Cigarette Smoke, pesticides, personal Care products, car Exhaust, new furnishings, wall coverings, household cleansers, and cooking fuels. Chemicals include: Acetone, ethylene glycol, formaldehyde, xylene, 1,3-butadiene, tetrachloroethene, hydrogen sulfide, ammonia, toluene, benzene, methylene chloride, perchloroethylene, and mtbe.