Definicija: 1) An air cleaning device that literally washes out the dust. Exhaust air is forced into a spray chamber, where fine water particles cause the dust to drop from the air stream. The dust-ladden water is then treated to remove the solid material and is often recirculated. 2) Equipment through which a gas is passed to remove impurities (solid, liquid, or gaseous particles) by intimate contact with a suitable liquid, usually an aqueous medium.

Definicija: 1. Naprava za čiščenje zraka, ki izpere prah. Izpuhi so usmerjeni v prostor za škropljenje, kjer drobni vodni delci povzročijo, da se prh spusti iz zračnega toka. Voda, napolnjena s prahom, je obdelana, tako da so trdi delci odstranjeni, pogosto se voda ponovno uporabi. 2. Pripomočki, skozi katere gre plin za očiščevanje nečistoč (trnih, tekočih ali plinastih delcev) z bližnjim kontaktom z ustrezno tekočino.