| abstract |
The invention relates to an aqueous formulation which comprises a) one or more proteolytic enzymes, b) one or more anionic surfactants, c) one or more nonionic surfactants, d) one or more corrosion inhibitors, e) one or more polyhydric aliphatic alcohols, f) one or more complexing agents, and g) one or more of para-hydroxybenzoic acid and esters thereof. The pH of the formulation is in the range of 9.5-12.5. The formulation is used in the mechanical cleaning of hard surfaces, especially medical instruments, and is preferably free of silicates. |