High-quality water for use in cell culture applications. This product is treated with distillation, ion exchange via reverse osmosis, deionization, and ultraviolet disinfection. It can be used for a variety of applications, such as preparation of cell culture media, buffers, and laboratory reagents, rinsing bioreactors, plasticware and glassware, or for methods like chromatography (HPLC) and spectrometry.