Millipore, the lab equipment major has announced the availability of its Centricon Plus-70 centrifugal filter device. The device is optimized for concentrating and desalting proteins, antibodies, viruses from chromatography fractions, cell culture supernatants, fermentation broths, and biological fluids. It can also be used for exchanging buffers.

The unique features of the new centrifugal filter are that it concentrates large samples faster than the traditional methods of filtering.

The Centricon Plus-70 device can concentrate 70 mL down to 350 µL in 25 minutes, with typical concentration factors between 50x and 200x and sample recoveries greater than 90 per cent. In addition, the device features a "deadstop" that prevents samples from spinning to dryness. The device contains Millipore's proprietary low-binding Ultracel regenerated cellulose membrane.

The product is available in packs of 2 or 8, the device is a convenient alternative to, lyophilization, or precipitation and dialysis techniques, according to the company.

Both Centricon and Ultracel are registered trademarks of Millipore Corporation.

Millipore is a multinational bioscience company that provides technologies, tools and services for the discovery, development and production of new therapeutic drugs. It serves the life science research, biotechnology and pharmaceutical industries.