Components
Bromophenol blue (0.05% w/v), sucrose (40% w/v), EDTA (0.1 M, pH 8.0), and SDS (0.5% w/v).
Application
Gel loading buffer is especially formulated for non-denaturing polyacrylamide and agarose gel electrophoresis of nucleic acids. The gel loading solution contains a bromophenol blue tracking dye and sucrose to add density and facilitate sample loading. EDTA has been included to inhibit nucleases that require divalent cations and SDS has been added to help dissociate DNA-protein complexes which can interfere with electrophoresis.
Other Notes
With EDTA to inactivate nucleases
Quantity
Recommended usage: add 1 volume gel loading solution to 2-5 volumes of sample and mix well.