| abstract |
Mixtures of (a) a 2-chloro-4,6-diamino-s-triazine of the formula I <IMAGE> (I) wherein R1 is alkyl having 2-5 C atoms or cycloalkyl having 3-5 C atoms, and R2 is alkyl having 3-5 C atoms or cycloalkyl having 3-5 C atoms, and (b) active halogen or an agent releasing active halogen are suitable for the combating of algae and simultaneous disinfection in water reservoirs, particularly in swimming-baths, and also in cooling-water circulation systems. |