This solution is used as a washing agent in immunoassays, such as Western blots and ELISAs. It helps to prevent non-specific antibody binding. The buffer is used for washes between each immunoreactions, to remove unbound immunologicals, and eventually for incubation solutions of immunoreagents (labeled antibodies) to reduce unspecific background. Warning: For laboratory use only. Not fit for agricultural, household, clinical use or human consumption. "