DS EN 13623:2010 Chemical Disinfectants And Antiseptics - Quantitative Suspension Test For The Evaluation Of Bactericidal Activity Against Legionella Of Chemical Disinfectants For Aqueous Systems - Test Method And Requirements (Phase 2, Step 1) Describes a test method and the minimum requirements for bactericidal activity of chemical disinfectant products intended to be used for treatment in aqueous systems against Legionella pneumophila tha