The use of National Diagnostics' ProtoGel stacking buffer will ensure the purity and performance of your Laemmli gels. When diluted as directed ProtoGel stacking buffer forms a gel of 0.125 M Tris-HCl and 0.1% SDS, pH 6.8.
Traditional Laemmli stacking gel buffer (4X)
Formulated with 0.2 micron filtration
Ultra-pure reagents in 18 Megohm water
Crystal clear, reproducible gels
Stable for 24 months when stored tightly capped in a dark area at room temperature