Edmund Optics has announced multiband filters that feature multiple passbands on a single filter for real-time live-cell analysis and high-speed imagery. The filters offer high peak transmission with good blocking, yielding maximum brightness and contrast for simultaneous viewing of multiple fluorophores. Each filter is hard-coated, then mounted in a 25-mm-diameter black anodized housing for durability and ease of handling. Eight dual-band models with passband wavelengths from 387 and 480 nm to 577 and 690 nm are available, as are five models of tri-band types with passband wavelengths from 387.5, 478 and 555.5 nm to 465, 537 and 623 nm. Four quad-band models with pass-band wavelengths from 387, 485, 559.5 and 649.5 nm to 446, 523.5, 600 and 667 nm also are offered.