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September 24, 2010  

New Long-pass Fluorescence Filter Sets

ROCHESTER, N.Y. Semrock Long-pass sets – Semrock has just released four new BrightLine® long-pass fluorescence filter sets to enhance its full line of established high-performance bandpass filter sets.  With these long-pass sets more fluorescence signal can be captured for low fluorophore concentration applications and when signal-to-noise ratio is not as critical.  They are also well suited for viewing fluorophores with very wide emission spectra or with a large wavelength shift between the excitation and emission wavelengths.   The new filter sets are targeted at imaging the most popular fluorophores including DAPI, GFP, and red fluorescent proteins such as mCherry.  Two DAPI sets are available allowing users to choose between a narrowband excitation filter to minimize photobleaching and phototoxicity to the sample, and a wide exciter for maximum signal in very low-concentration samples.  Users of current DAPI, GFP or mCherry BrightLine filter sets may quickly upgrade to long-pass sets by just dropping in the new long-pass emission filters purchased separately.  All three emitters are guaranteed to offer > 93% average transmission over the passband and extremely steep edges that are perfect for capturing fluorescence as close to the excitation band as possible for maximum efficiency.


Semrock’s industry-leading and proprietary hard-coated filter manufacturing process ensures permanent performance with “no burn-out” even under the most intense illumination conditions.  Semrock filters are available from stock for same-day shipment with a 30-day no-hassle return policy and are covered under the company’s five-year warranty. Custom-sized filters are available in under a week.






Semrock, Inc., a Unit of IDEX Corporation, manufactures optical filters that set the standard in performance and reliability for the biotech and analytical instrumentation industries, as well as innovative optical filters for more general laser and optical systems applications.  All Semrock optical filters are made with hard ion-beam-sputtered optical coatings. OEM filters are manufactured in volume.  End-users benefit from a wide selection of standard catalog products that ship from stock.  Semrock’s patented and patent-pending products include its highly acclaimed BrightLine® fluorescence filters, state-of-the-art filters for Raman spectroscopy, and other unique filters for lasers and optical systems.  Semrock’s innovative filters, made possible by combining modern ion-beam sputtering with Semrock’s proprietary volume manufacturing technology, are covered under a five-year warranty.


Founded in September 2000, Semrock is based in Rochester, New York, a well-known center of optics, and has sales offices throughout the United States.  In October 2008 Semrock became a Unit of IDEX Corporation.  For additional information about Semrock, its products, and its team of international distributors, visit the company website at www.semrock.com.




Amanda Valek-MacDonald


Semrock, a Unit of IDEX Corporation