A system and method for fluid dilution is provided, in one example to be used in conjunction with a chemical analysis tool. In one embodiment, a fluid dilution system includes a supply reservoir including a concentrated fluid, a diluent source including a diluent, and a diluted fluid reservoir operably coupled to the supply reservoir and the diluent source. A fluid level sensor is operably coupled to the diluted fluid reservoir, a pump is operably coupled between the supply reservoir and the diluted fluid reservoir, and a controller is configured to engage the pump based upon signals from the fluid level sensor to pump desired amounts of the concentrated fluid for providing a diluted fluid in the diluted fluid reservoir.