How ESP's Work An ESP (Electro-static precipitator) captures indoor pollutants much like a magnet. As contaminated air is drawn through the unit, the particles are given a positive charge by the ionizer. These charged contaminated particles are deposited on oppositely charged collecting plates as air flows through the unit. The clean air is then recirculated into the room.    Media Filtration   Simple and Economical Solution For Capturing Harmful Contaminants... Dust-CatŪ Media Filtration Series helps you meet OSHA requirements for employee heath and safety by removing contaminants from the air. Dust-CatŪ collects small, large and conductive materials where dry or wet particles are a problem. The Dust-CatŪ products are non-electrostatic air cleaning systems with high efficiency filters ideal for removing smoke, dust, oil mist and other pollutants from plant air. Offering a practical and effective solution for collecting contaminants, the Dust-CatŪ series comes with multiple filtration options to fit your specific pollution control needs, HEPA filters for sub-micronic or toxic/hazardous substances, oil impingement filters for oil mist, carbon filters for odors and gases and a selection of prefilters and bag filters ranging in both size and efficiency. The filters are easy to replace or clean, and the media collection surface holds up to 30% more contaminant than comparable products, which means less frequent filter changes. Home | Vehicle Diesel Exhaust | Commercial Air Cleaning Home Air Cleaning | Who We Are | Types of Filtration | More Info