Bacteriostatic water

Bacteriostatic water is a sterile form of water with a pH ranging from 4.5 to 7.0. It is also prepared with a bacteriostat — a compound used to prevent the spread of bacteria. This bacteriostat is usually 0.9% benzyl alcohol. It is used only for injections, such as intravenous, intramuscular, and subcutaneous. Thanks to the bacteriostat, bacteriostatic water comes in a multi-dose formulation for multiple uses.

Sterile water is purified water that has been distilled and has a pH ranging from 5.0 to 7.0. No preservatives or antimicrobial agents are added to it. Sterile water is available for injection use, such as intravenous, intramuscular, and subcutaneous. Sterile water usually comes in single-dose units, and reuse of units is prohibited. Due to the absence of antimicrobial agents, sterile water can easily become contaminated after exposure to the environment and even to yourself.