From Semrock Inc. is the 2005 catalog titled “The Standard in Optical Filters for Biotech & Analytical Instrumentation.” Along with tutorials and technical notes, the 28-page, full-color catalog specifies the BrightLine filters for fluorescence instrumentation and microscopes, including the Zero series for exact image registration and the multiband types for high brightness, contrast and color balance. Among other offerings are the RazorEdge filters for Raman spectroscopy, the StopLine deep notch filters, the MaxLine laser-line filters and the MaxMirror laser mirror, which covers an ultrabroadband range. Numerous charts and diagrams are provided.