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January 1, 2009 (Vol. 29 , No. 1)

Stain-Free Imaging System

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Bio-Rad Laboratories

Criterion Stain Free™ imaging system is designed to enable stain-free detection and quantitation of proteins. The system consists of a new formulation of Criterion precast gels, a Criterion Stain Free imager, and Image Lab™ software. This system enables scientists to bypass the staining and destaining steps of SDS-PAGE and visualize protein samples after electrophoresis. In addition, the system captures digital images of gels to make record keeping easy and gel drying obsolete. Benefits of the system include: obtaining gel images in 2.5 minutes after electrophoresis; one-touch operation; equal or improved sensitivity compared to a Coomassie stain; compatibility with Western blotting and mass spectrometry; elimination of the gel-drying step; and no organic waste produced as a result of the process.

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