U.S.P. Purified Sterile Water is for laboratory analysis and medical institutions.
Water is the most used reactive ingredient in clinical laboratory reagent. It is used at all levels of chemical, biological and physical analysis, and several tests may be affected by its quality. A certification from the United States Pharmacopeia (U.S.P.) means that the product complies with strict criteria in terms of preparation and purity. [Quebec National Institute of Public Health]
Purified and deionized