The present invention refers to a process for bacterial stabilizing aqueous preparations like e.g. calcium carbonate slurries and a composition which can be used for the biocidal treatment of such aqueous preparations.本發明關於一種用於穩定像是例如碳酸鈣漿液之水性製劑的細菌之方法,以及一種可用於該水性製劑之殺生物處理之組成物。