There are provided methods for controlling microbial or bioflim growth, comprising mixing a hypochlorite oxidant and at least one nitrogen-containing compound or salt thereof selected from a particular group of nitrogen-containing compounds and salts to form a biocide, and applying the biocide. Apparatus for practicing the methods are also provided.本發明係提供控制微生物或生物膜生長之方法，其包括將次氯酸鹽氧化劑與至少一種選自含氮化合物及鹽之特別群組之含氮化合物或其鹽混合，以形成殺生物劑，並施用該殺生物劑。亦提供供實施該等方法之裝置。
