An apparatus that removes dust or other finely divided particles from a gas by charging the particles inductively with an electric field, then attracting them to highly charged collector plates.

1. An instrument which removes small foreign particles; such as, dust and pollen, from the air by electrically charging and then collecting the particles on a plate that is oppositely charged.
2. A tool which removes dust or other finely divided particles from a gas by charging the particles inductively with an electric field, then attracting them to highly charged collector plates.
3. A device that removes small foreign particles from the air; such as, ash, dust, and acid by electrically charging and then collecting the particles on a plate that is oppositely charged.

Used to filter out pollutants and to retrieve valuable materials, from utility and industrial processes, before they reach the atmosphere.