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Bacteriostatic Water refers to a sterile aqueous solution containing a preservative intended to limit microbial growth after a container has been accessed. The term is commonly used in discussions of preserved reconstitution diluents.
Bacteriostatic is not sterilizing
A preservative may limit multiplication of certain microorganisms, but it does not correct poor aseptic technique or remove existing contamination. Clean equipment, surfaces and handling remain essential for reliable laboratory work.
Difference from sterile water
Preservative-free sterile water and preserved water are not interchangeable terms. They differ in composition, intended purpose and compatibility. Researchers should check the experimental protocol and documentation for every component before sample preparation.
What should be documented?
- solution lot and expiry
- date of first access
- volume and composition of the diluent
- storage conditions
- sample appearance and observed changes
Related laboratory material
See the Preserved Reconstitution Diluent, 3 ml.
Source
DailyMed: Bacteriostatic Water documentation
RESEARCH USE ONLY: This educational content concerns laboratory and scientific research. Peptiva research materials are not medicines and are not intended for use in humans or animals.
Related catalogue and documentation
Common question
Is bacteriostatic water a universal solvent for every assay?
No. Its preservative may be incompatible with certain cell assays or materials. Solvent choice must match sample specifications and the protocol; preservative presence does not replace sterility evidence or endotoxin testing.