OR-TEC’s Blue Whale micro bar screen removes wipes, rags, plastics, hair and other stringy material at the headworks. The 2 mm multirake screen is self-cleaning and is guaranteed not to bind. It uses a parallel array of wedge-sectioned bars with even spaces to form the screen face. The bars have only two contact points where material can block, so solids that pass through the two contact points can’t become clogged between the bars. A cleaning rake with slotted teeth penetrates past the opening on the bars, cleaning the array and preventing clogging or blinding of the screen. 216/475-5225; www.or-tec.com