Alkaline detergent (liquid concentrate) for the automated cleaning of laboratory glassware and other laboratory utensils. Especially suitable for residuefree cleaning of pharmacy glass bottles and infusion flasks, glassware used for cell and tissue cultures as well as laboratory glassware for microbiology and nuclear medicine. Removes residues of culture media, blood, proteins, radioactive contamination, residues of cell and tissue cultures as well as other organic residues. With oxidising effect, free of surfactants.