Request InfoEdmund Optics Inc.BARRINGTON, N.J., Dec. 14, 2007 -- Edmund Optics has introduced new TechSpec preloaded filter wheels, six-position filter wheels that come preloaded with 1-in.-diameter filters. The wheels come with an instruction sheet showing the placement of each filter, as they are package-specific. Various packages are available including neutral density (ND), shortpass, longpass, dichroic and bandpass. The ultraviolet/visible (UV/VIS) ND and the near-infrared (NIR) ND filter wheel packages include filters with ODs of 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0. 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