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Bacteriostatic (BAC) Water is a sterile, non-pyrogenic solution containing 0.9 % benzyl alcohol (9 mg/mL) in water for injection. Designed for research applications, it is commonly used to dissolve or dilute lyophilized compounds, ensuring sterility and stability during multiple withdrawals under controlled laboratory conditions.
BAC Water is a sterile aqueous solution containing benzyl alcohol (0.9 %, w/v) as an antimicrobial preservative in water for injection [1].This combination renders the solution bacteriostatic—capable of inhibiting bacterial growth—making it distinct from sterile water without additives [1]. Benzyl alcohol is an aromatic primary alcohol with a mild antimicrobial profile and is listed in the PubChem database under CID 244 [2].
In peptide research, BAC Water is frequently employed to reconstitute lyophilized peptides prior to experimental assays [3]. The bacteriostatic property of benzyl alcohol allows repeated vial entry without significant risk of microbial contamination during the research period [3]. This is particularly advantageous for experiments requiring incremental sampling or extended timelines.
BAC Water’s benzyl alcohol component plays a key role in maintaining sterility, which can reduce the risk of peptide degradation caused by microbial enzymes [4]. Researchers often investigate how various diluents affect peptide stability, and BAC Water is a preferred control when evaluating antimicrobial preservation effects [4].
In microbiological studies, BAC Water serves as a reference medium to evaluate bacterial growth inhibition in the presence of low-level alcohols [5]. Such work may include comparative testing between bacteriostatic and non-bacteriostatic solvents, helping to quantify preservative efficacy under controlled laboratory conditions [5].
While BAC Water’s bacteriostatic nature offers distinct research benefits, certain cell culture applications avoid benzyl alcohol due to its potential cytotoxicity at higher concentrations [6]. PubChem data also notes that benzyl alcohol can disrupt certain enzymatic reactions in vitro [6]. Consequently, researchers carefully match the diluent to the specific assay requirements.
This product is meant only for research use. It is made for lab testing and in vitro experiments (outside a living body), not for use in people or animals. All information on this website is for learning purposes only. Bodily introduction of any kind into humans or animals is strictly forbidden by law. It should only be used by trained professionals in a proper lab setting. This product is not a medicine, food, or cosmetic, and must not be sold or used as one.
