Omega Optical has released a new catalog of fluorescence filter sets. The 2007 catalog, Precision Optical Filters for Fluorescence Microscopy, includes fifteen high performance sets for fluorescent proteins, and ten new sets for Fret applications. These products complement an extensive selection of dye-specific filter sets for all single and multi-label microscopy applications, including Quantum Dots, M-FISH, Pinkel, Sedat, Ratio Imaging, Confocal, and Multi-photon. In addition, there are resources such as a fluorophore reference table, light source and detector spectral data, an explanation of filter nomenclature, guidelines for choosing the optimal filter sets, and a list of components organized by wavelength.