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January 14, 2007  

Semrock Extends UV Ion Beam Sputtering Capability

ROCHESTER, N.Y. – Semrock, Inc., the leading manufacturer of high-performance optical filters for the Biotech and Analytical Instrumentation markets, today announced the availability of high performance high-reliability filters at UV wavelengths including 248 nm, all made with its advanced Ion Beam Sputtering technology.
"There has been strong demand for improved UV optical filters and Semrock has responded by extending its industry-leading performance," says Dr. Turan Erdogan, CTO of Semrock. "These advances culminate a year of intense improvements to the Ion Beam Sputtering deposition process for which we are so well known, plus extensive reliability testing to ensure our customers' continued satisfaction into the future."

The new filters include 248 and 266 nm versions of the ultrasharp RazorEdge® filters that are popular for Raman spectroscopy. Just like the visible versions of these filters, the new UV RazorEdge filters have guaranteed laser-line blocking of greater than OD 6, and ultrasteep edges, yet still manage greater than 90% average transmission over the passband. Also introduced is a 266 nm MaxLine® laser clean-up filter with industry-leading transmission guaranteed to exceed 55% at the laser line, yet with the same ultrafast roll-off of the visible wavelength MaxLine filters.

Finally, Semrock has released UV-transmitting BrightLine® fluorescence filters with unprecedented performance. A novel 280 nm bandpass filter opens new vistas in biological research due to its high UV transmission (> 70% over the 20 nm passband centered at 280 nm) coupled with broad and deep blocking of nonessential wavelengths. This combination of transmission, edge definition and blocking range can result in a stunning improvement in signal-to-noise ratio – over 100 times that of systems using conventional metal-dielectric filters. And yet this 280 nm fluorescence excitation filter has the "no burn-out" durability that all BrightLine fluorescence filters are known for. The 280 nm excitation filter also forms the basis of a new UV fluorescence filter set for exciting and imaging the native fluorescence from Tryptophan, an important amino acid that has a strong absorption band at 280 nm, thus eliminating the need for a separate labeling agent.

These innovative new UV filters are all available from stock, with additional UV filters planned. These new UV products have undergone extensive reliability and laser-damage threshold testing and meet the rigorous standards that Semrock customers have come to expect. RazorEdge, MaxLine and BrightLine filters are covered by issued U.S. patents, with the new UV improvements further patent pending.




About Semrock:
Semrock manufactures, in high volume, optical filters that set the standard in performance and reliability for the biotech and analytical instrumentation markets. Semrock's patented and patent-pending products include the highly acclaimed BrightLine series of fluorescence filters for research and clinical microscopy, high-throughput screening, real-time PCR, and other fluorescence-based instrumentation; exceptional filters for Raman spectroscopy, and unique biomedical laser system optics. Semrock's innovative products are made possible by combining modern ion-beam sputtering with Semrock's proprietary volume manufacturing technology. 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. For additional information about Semrock, its products, and its team of international distributors, visit the company website at www.semrock.com.

RazorEdge, MaxLine and BrightLine are registered trademarks of Semrock, Inc.


Amanda Valek-MacDonald
Semrock, a Unit of IDEX Corporation