A manufacturer of optical filters for the biotechnology and analytical instrumentation markets, Semrock Inc. has issued its 2006-2007 catalog. The 48-page full-color publication presents filters for applications including Raman instrumentation, biomedical laser systems, and fluorescence instrumentation and microscopy. Among the new products highlighted are single- and multiband bandpass filters, and single-, dual- and triple-edge diochroic beamsplitters. The MaxDiode laser diode cleanup filters, the StopLine single- and multinotch laser line types, and the BrightLine Clinical fluorescence variety are included. Technical notes are provided.