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Air Sampler is to collect pollutants or contaminated air instruments or devices. Many types, classified according to the collection object for gas sampling and particulate sampler; on-use sites can be classified as environmental sampling, indoor sampler sampler and pollution sources. In addition, there are special-purpose air sampler, such as collection of gas and particulate matter sampler. Gas sampling is generally by the collector, flowmeter and gas-powered pumping system consists of three parts.