Bromophenol Blue

Bromophenol Blue is a deep blue-colored dye widely used as a sample loading and tracking dye in electrophoresis gels. At moderate pH, the dye carries a slight negative charge, allowing it to migrate in the same direction as DNA in a gel. It is also used as a pH indicator, transitioning from yellow at acidic pH to blue in alkaline conditions. When purchasing Bromophenol Blue, researchers should consider the dye’s grade (e.g., molecular biology grade or analytical grade), as impurities can affect performance. Visit the supplier datasheet page for more details, including quantity, format, and ordering information.