Easy to move and position, the portable Zephyr II collector comes as a self-contained unit. The user needs only to plug in the 110 v power cord and compressed air line, install the fume arm, and the unit is capturing dust and fumes. Contaminants entering the collector are removed by three independent stages of filtration: a metal filter that functions as a spark trap, a spun-bond polyester main filter for fine particle removal and a carbon after filter for odors and gases. The main filter, which uses a reverse pulse cleaning system to extend filter life, offers 99.99% efficiency on 0.5 micron and larger particles. The filter is also washable for virtually unlimited service life.