An extensive line of acrylamide and bis-acrylamide pre-weighed powder blends, premixed stock solutions and ready-to-use solutions for customized polyacrylamide gel electrophoresis of proteins and PAGE of nucleic acids. Ultra-pure (>99.9%) acrylamide and bis-acrylamide powders provide the flexibility to prepare solutions having concentrations and ratios for all electrophoresis applications. Liquid blends minimize the handling of neurotoxic acrylamide.