Product Introduction Add SOC to freshly transformed E. coli cells and incubate for up to 1 hour before plating on selective media. For NEB 10-beta and NEB Stable Competent E. coli, please use NEB 10-beta/Stable Outgrowth Medium (NEB # B9035). Bioz Badge Exists : True Catalog # Size Concentration B9020S 100 ml