Request InfoIDEX Health & Science - Semrock Optical FiltersSemrock Inc. has expanded its family of BrightLine filters with the introduction of a quad-band fluorescence filter set. The company says that the six-filter DAPI-FITC-TRITC-Cy5 Pinkel set has up to four times the brightness, twice the contrast and lower crosstalk than conventional versions. High-efficiency quad-band beamsplitter and emission filters are mated with four “no burn out” single-band exciters to create bright, high-contrast images. 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