Odors are one of the most common sources of air pollution complaints and may be due to a wide variety of sources from rotting vegetation, animal feedlots, pulp and paper manufacturing, sewerage treatment facilities or food preparation facilities. The measurement of odors is extremely challenging due to the variety of sources of odor and the often very low parts per billion ppb concentrations that produce odor. However, some industries and applications have a known source of odor resulting from compounds such as mercaptans, hydrogen sulfide, ammonia, typically from industries such as pulp and paper manufacturing, fertilizer production or natural sources such as rotting vegetation. American Ecotech is able to offer extremely sensitive odor detection and odor monitoring instrumentation and systems that enables the low ppb monitoring of these species down to 1 ppb, fully integrated with our data evaluation and reporting software.