Centrifugal Concentrators are optimized for performance.

Press Release Summary:

Compatible with swinging-bucket and fixed-angle rotors, Pierce® Concentrators are used for protein concentration, desalting, and buffer exchange. Design, consisting of regenerated cellulose membrane fused to conical device, optimizes concentration factor achieved in single centrifugation step while minimizing polarization and adsorption at membrane surface. Concentration factors of greater than 110-fold can be achieved in less than 45 min with 20 ml device or 30 min with 7 ml device.

Original Press Release:

Thermo Fisher Scientific Offers New Line of Centrifugal Concentrators

ROCKFORD, Ill. (August 17, 2009) - Thermo Fisher Scientific, the world leader in serving science, today introduced the Thermo Scientific Pierce Concentrators for convenient protein concentration, desalting and buffer exchange. The unique design of the Pierce® Concentrators consists of a high-performance regenerated cellulose membrane fused to a conical device. This design greatly improves the concentration factor achieved in a single centrifugation step and minimizes polarization and adsorption at the membrane surface. The Pierce Concentrators result in concentration factors of greater than 110-fold in less than 45 minutes with the 20 ml device. The same concentration is achieved in 30 minutes with the 7 ml device.

The Pierce Concentrators are compatible with swinging-bucket and fixed-angle rotors and are accurately rated for molecular weight cut-off (MWCO), routinely providing greater than 90 percent recovery of proteins larger than the membrane MWCO. The Pierce Concentrators are available with MWCOs of 9, 20 or 150K.

The Pierce Concentrators are supplied in packs of 10 or 25 devices. The 7 ml size device accommodates sample volumes of 1-7 mls; the 20 ml size device covers 5-20 ml sample volumes.

For more information on the new line of Pierce Concentrators, visit www.thermo.com/pierce or contact us

Thermo Scientific is part of Thermo Fisher Scientific, the world leader in serving science.

About Thermo Fisher Scientific
Thermo Fisher Scientific Inc. (NYSE: TMO) is the world leader in serving science, enabling our customers to make the world healthier, cleaner and safer. With 2008 revenues of $10.5 billion, we have approximately 34,000 employees and serve over 350,000 customers within pharmaceutical and biotech companies, hospitals and clinical diagnostic labs, universities, research institutions and government agencies, as well as environmental and industrial process control settings. Serving customers through two premier brands, Thermo Scientific and Fisher Scientific, we help solve analytical challenges from routine testing to complex research and discovery. The Thermo Scientific brand represents a complete range of high-end analytical instruments as well as laboratory equipment, software, services, consumables and reagents to enable integrated laboratory workflow solutions. Fisher Scientific provides a complete portfolio of laboratory equipment, chemicals, supplies and services used in healthcare, scientific research, safety and education. Together, we offer the most convenient purchasing options to customers and continuously advance our technologies to accelerate the pace of scientific discovery, enhance value for customers and fuel growth for shareholders and employees alike. Visit www.thermofisher.com.

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