Bacteriostatic water: ingredients, identity and certificate checks

Check the documented benzyl alcohol formulation, vial and lot details, and the open analytical questions in the supplied water certificate.

Substantially revised on 3 October 2026 to focus on molecular identity, naming, chemistry, testing and documentation.

The supplied bacteriostatic-water report describes an aqueous formulation containing 0.9% benzyl alcohol. It is a formulation record, so ingredient concentration, container details and water-quality tests are the useful fields to check.

Read the documented formulation

The supplied 10 mL report, MA-WFI-0048, revision 01, identifies lot WFI-48-G3T and declares 0.9% benzyl alcohol. Its ingredient assay reports 0.90%. Record the declaration and reported result separately, keeping the percentage basis as stated in the applicable specification.Water formulation 10 mL report: MA-WFI-0048 (opens in a new tab)

Formulation identity fields
FieldReference or document detail
Catalogue nameBacteriostatic water
Documented ingredient declarationWater with 0.9% benzyl alcohol
Container label amount10 mL in the linked report
Peptide sequenceNot applicable
Single molecular formula or weightNot applicable to the complete aqueous mixture
CAS numberNo single mixture CAS number specified in the report
Water formulation 10 mL report: MA-WFI-0048 (opens in a new tab)

Keep the report attached to the container

The report lists fill volume as 10.09 mL and includes separate benzyl alcohol, pH, conductivity, organic-carbon, endotoxin and sterility entries. These are formulation and water-quality fields; a peptide chromatographic-purity percentage is not a substitute for them.Water formulation 10 mL report: MA-WFI-0048 (opens in a new tab)

Match the material name, declared formulation, container size, lot and report revision. Where an ingredient concentration basis or a sample stage is unclear, retain it as an open documentation field and request the applicable specification.Water formulation 10 mL report: MA-WFI-0048 (opens in a new tab)

Preserve the unresolved analytical questions

The PDF reports benzyl alcohol alongside total organic carbon, but does not explain the TOC sample stage or calculation basis. It is therefore unclear from the document how the organic-carbon result relates to the preserved filled formulation. Keep that question attached to the report.Water formulation 10 mL report: MA-WFI-0048 (opens in a new tab)

Analysis is dated 8–9 September 2026 and approval 10 September, while the results include a sterility conclusion. The underlying test start, completion and reporting timeline needs clarification. Transcribing that conclusion is not independent verification of the test process.Water formulation 10 mL report: MA-WFI-0048 (opens in a new tab)

Retain the supplied file and any later clarification with its date and document version. The dedicated water-certificate guide covers interpretation of the individual analytical fields.Water formulation 10 mL report: MA-WFI-0048 (opens in a new tab)

Product and certificate checks

Sources and further detail

  1. Water formulation 10 mL report: MA-WFI-0048 (opens in a new tab)

    Supplied PDF re-read on 3 October 2026. Identity wording and document-specific results are transcribed; this is not independent authentication.

Revised 3 October 2026 using the existing source dossier and the specified primary identity records. Report values describe the linked samples. Products are for laboratory research use only.

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