Protein Stains



Protein Stains

Proteins in electrophoresis gels can be seen using a variety of protein-specific stains. Bio-Rad offers several sensitive stains that are ideal for classroom use.

Bio-Safe™ Coomassie Stain

By far our most popular stain for research and teaching labs, Bio-Safe Coomassie stain detects proteins in native, SDS-PAGE, and peptide gels without methanol, acetic acid, or other hazardous reagents. Bio-Safe Coomassie stain is a ready-to-use, single-reagent protein stain that produces a linear response, allowing quantitative analysis. Color development is extremely easy. Simply soak the gel in the stain and rinse with water; results begin to appear in 20 min. With sensitivity as low as 8 ng per band, you simply get better results without the solvent waste and toxicity problems of conventional protein stains.

Coomassie (Brilliant) Blue R-250 Solutions

Coomassie (Brilliant) Blue R-250 staining solution is the easiest way to fix and detect proteins in polyacrylamide gels. Ready-to-use solutions are packaged in 1 L sizes and eliminate the need to weigh powders or dilute solutions.

Silver Stain Plus™ Kit

Easy-to-use Silver Stain Plus stain is our most sensitive silver stain. The Silver Stain Plus kit is ideal for both proteins and nucleic acids in polyacrylamide or agarose gels.

Key Features

• Detects nanogram quantities of protein and DNA
• Eliminates gel background by preventing silver precipitation in the gel matrix
• Involves only three steps: fixing, washing, and staining
• Detects bands in 1 hr
• Stains 40 mini gels per kit