Precipitators are devices used to remove impurities or suspended particles from a gas or liquid stream. There are several synonyms for this term, including electrostatic precipitators, dust collectors, and particulate control devices. Electrostatic precipitators use an electric field to generate a charge on particles and draw them to a collection surface. Dust collectors use filters to trap particles and remove them from the gas stream. Particulate control devices encompass a range of technologies that can be used to capture and remove particulates, including baghouses, cyclones, and wet scrubbers. These devices are commonly used in industrial and manufacturing settings to reduce pollution and protect the environment and human health.