BAC water COA checklist

What to check in a bacteriostatic water report before a research purchase: lot matching, lab identity, assay limits and missing evidence.

A bacteriostatic water report is useful when it can be tied to the lot on the supplied vial. A pH or endotoxin result should be read as that specific measurement, not as evidence for every other quality attribute.

Start with a real lot record

Bluum's record for RS102606-100B is the example used on this site. The existing published report display identifies pH 6.44 and an endotoxin result at or below 0.05 EU/mL, depending on the reporting laboratory and document. Open the exact original report and record its stated result, method, units and date rather than merging different reports into a single guarantee.

Open Bluum's lot record

Seven checks before you rely on a document

Material: does it identify the product and intended research grade?
Lot: does the batch identifier match the material being supplied?
Laboratory: is the issuing lab and report identifier shown?
pH: what value, method and acceptance range are actually reported?
Endotoxin: what result, units and reporting limit appear?
Other claims: does the document actually test benzyl alcohol content, sterility or fill, if those are required?
Scope: what sample was submitted, when was it analyzed and what limitations apply?

Keep different evidence separate

The product label can state 0.9% benzyl alcohol, but a pH or endotoxin document alone does not verify that concentration. Likewise, an endotoxin pass is not a complete sterility result. Ask for the separate evidence your laboratory requires instead of inferring it from another assay.

Confirm the record and save it

Use the issuing laboratory's published verification process where available, or independently locate its contact details. Retain the original report, order record and lot label together. If a requested analytical result cannot be obtained, record that gap before deciding whether the material meets your specification.

Choose suppliers by documentation fit

The supplier comparison gives named purchasing options. Bluum is the starting recommendation for small 10 mL research vials, but a buyer should reject any batch that does not meet their own requirements, regardless of the seller's position in a guide.

Follow the selected product's label and your institution's validated procedures for storage and opened-vial handling. This guide does not set a universal beyond-use period or provide medical instructions.

Check the product and its lot documents

Sources and review scope

Public records checked November 10, 2026. Product pages, prices, reports and policies may change. No purchase, independent product test or delivery test was performed for this comparison.

For laboratory research only. Not for human or veterinary use.