Acid neutralising agent and detergent (liquid concentrate) for the automated cleaning of laboratory glassware and other laboratory utensils. For neutralising any carried over alkaline residues and for removing acid-soluble residues. Especially for laboratories that carry out sensitive analyses, where residues of phosphates and surfactants would adulterate sensitive analyses. Based on organic acids. Material compatible. Free of surfactants and phosphates. Acid neutralising agent and detergent (liquid concentrate) for the automated cleaning of laboratory glassware and other laboratory utensils. For neutralising any carried over alkaline residues and for removing acid-soluble residues. Especially for laboratories that carry out sensitive analyses, where residues of phosphates and surfactants would adulterate sensitive analyses. Based on organic acids. Material compatible. Free of surfactants and phosphates.