A microbicidal agent containing o-phenylphenol (OPP) together with 2-bromo-2-nitro-1,3-propanediol (bronopol) and/or 2-methyl-2H-isothiazol-3-one (MIT) and/or 1,2-dibromo-2,4-dicyano-butane (tektamer 38) is new. An independent claim is also included for the preparation of the agent comprising admixture of the components, optionally together with extenders and/or surface active agents. ACTIVITY : Antibacterial fungicide algicide. No biological data given. MECHANISM OF ACTION : None given.
