Tris solutions are formulated into working concentrations for preparing the stacking and resolving portions of native or SDS-PAGE gels using discontinuous buffer systems according to Laemmli (1970) or Ornstein and Davis (1959).Tris HCl Buffer is compatible with many enzymes in molecular biology (e.g. DNA modifying enzymes). Use the Tris-HCl 0.5 M (pH 6.8) buffer for stacking gels. Use Tris-HCl 1.5 M (pH 8.8) buffer for resolving gels. Use Tris-HCl 1 M pH 7.0-7.5 for DEAE Dextran-mediated transfection of non-adherent and adherent cells.
Tris HCl 2M pH 6.8 is useful with SDS-PAGE and Electrophoresis.