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April 15, 2012 (Vol. 32 , No. 8)

Protein-Quantitation System

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EMD Millipore

The Direct Detect™ system enables infrared-based measurement of amide bonds in protein chains without relying on amino acid composition, dye-binding properties, or redox potential. The system employs a hydrophilic polytetrafluoroethylene membrane designed to be transparent in most of the infrared spectral region and enables application of biomolecule solutions directly onto the membrane. The Direct Detect system can measure protein concentrations from 0.2 mg/mL to 5 mg/mL—without any bio- or immunochemical staining—directly from samples, including buffered solutions. It can also be used to provide information on nonprotein sample components, such as lipids and nucleic acids.

  • EMD Millipore
  • 290 Concord Road
  • Billerica MA, 01821

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