Disinfectant concentrates and the use thereof for the automated instrument disinfection

Disinfectant formulation a) one or several agents selected from quaternary ammonium compounds, alkyl amines, Alkylthiouroniumsalzen, alpha, omega-Alkylendithiouroniumsalzen b) 1 to 50 wt .-% of at least one complexing agent, c) 50 wt .-% of at least until a nonionic surfactant and d) from 0.1 to 10 wt .-% N-alkyl-Isononansaureamid contains.