Microbicidal mixtures

A microbicidal composition comprising a mixture containing an antimicrobially effective amount of 2-methyl-2H-isothiazol-3-one and 2-bromo-2-nitro-1,3-propanediol, extenders and, optionally, surfactants.

A method for protecting an industrial material against attack from a microorganism comprising mixing or treating a material with (i) a mixture comprising (a) an antimicrobially effective amount of 2-methyl-2H-isothiazol-3-one and (b) 2-bromo-2-nitro-1,3-propanediol or (ii) a microbicidal composition comprising (a) a mixture containing an antimicrobially effective amount of 2-methyl-2H-isothiazol-3-one and 2-bromo-2-nitro-1,3-propanediol, (b) and extender and, (c) optionally, a surfactant.

A process for preparing a microbicidal composition comprising a mixture containing (a) an antimicrobially effective amount of 2-methyl-2H-isothiazol-3-one and 2-bromo-2-nitro-1,3-propanediol, (b) an extender and, (c) optionally, a surfactant,

• the process comprising mixing (i) a mixture comprising an antimicrobially effective amount of 2-methyl-2H-isothiazol-3-one and 2-bromo-2-nitro-1 ,3-propanediol with an extender and, optionally, a surfactant.