Scrubbers, also known as purifiers, are devices used to remove harmful pollutants from exhaust gas emissions before release into the atmosphere. Some common synonyms for the term scrubbers include absorbers, purifiers, cleaners, and decontaminators. Scrubbers are typically used in industrial processes to reduce emissions of particulate matter, sulfur dioxide, and other harmful substances. They can be either dry or wet, depending on the type of pollutants they are designed to remove. Other related terms include gas scrubbers, fume scrubbers, and air scrubbers, which all refer to the same general function of purifying emissions. Overall, scrubbers play an important role in reducing pollution and protecting the environment.