Substitutes for Bacteriostatic Water

Primary Substitutes

• Sterile water for injection is the most appropriate direct substitute for bacteriostatic water when preparing solutions for medical use 1, 2
• Filtered water (water passed through a 0.2µ filter) can be used as an alternative when rinsing reusable semicritical respiratory equipment after chemical disinfection 1
• Tap water followed by an isopropyl alcohol rinse and forced air drying can be used as a last resort for rinsing equipment when sterile or filtered water is not available 1

Important Considerations When Substituting

For Medical/Injection Use:

• Always use sterile water (not distilled, nonsterile water) when filling devices used for nebulization 1, 2

For Equipment Rinsing:

• When rinsing semicritical respiratory equipment after disinfection, use sterile water preferentially 1
• If sterile water is not available, use filtered water (0.2µ filter) 1
• As a last resort, use tap water followed by isopropyl alcohol rinse and forced-air drying 1

Specific Applications

For Dental Procedures:

• Use sterile saline or sterile water as coolant/irrigant when performing oral surgical procedures 3, 4
• Use devices specifically designed for delivering sterile irrigating fluids (e.g., bulb syringe, single-use disposable products) 3, 4

For Respiratory Equipment:

• Use only sterile water to fill reservoirs of devices used for nebulization 2
• Do not use distilled, nonsterile water for nebulization devices 2

Caution

• Regular tap water should not be used as a direct substitute for bacteriostatic water in medical injections or for filling nebulization devices 2
• Distilled water is not an appropriate substitute for bacteriostatic water in medical applications requiring sterility 2

Common Pitfalls to Avoid

• Never use non-sterile water for injection purposes or for filling nebulization devices 2
• Do not assume distilled water is sterile; it lacks the bacteriostatic properties needed for multi-dose applications 2