The present invention relates to a composition comprising a metal compound, a lignosulfonate and phosphorous acid and/or a salt and/or a hydrate and/or an ester thereof and its use as fungicide, bactericide or fertilizer and its use in preventing the formation of a metal phosphite precipitate in an aqueous composition. The composition is preferably an aqueous composition comprising 0.1 wt. % to 40 wt. % of dry matter, calculated on the total weight of the aqueous composition. The present invention also relates to a process for preparing the aqueous composition.
