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BacterioWater

Lot EB61901 · Reported Sep 4, 2026

Bacteriostatic water lab testing.
Every result published.

The lot shipping today has been analysed by independent laboratories, most recently on September 4, 2026 — and every certificate is printed on this page, not held back behind a request form.

  • Independently lab-tested
  • COA published per lot
  • Sealed, lot-coded vials
  • Ships from the US

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

Certificate of Analysis, accession 2609020233, from Freedom Diagnostics for 30 mL bacteriostatic water, lot EB61901: identity by LC-MS and purity by HPLC-UV
Accession #2609020233Open the PDF
Reported September 4, 20262 certificates · Freedom Diagnostics

Testing process

How a lot gets released

Five steps, in order, for the lot currently on the shelf.

  1. Filled and sealed at the manufacturer

    A third-party facility fills a single production run into 30 mL rubber-stopper vials and seals it. Every vial from that run carries the same lot code on its label. BacterioWater does not fill or package the product.

    Group of sealed 30 mL bacteriostatic water vials with pink flip-off caps from a single production lot
  2. Sampled and sent out for analysis

    A sample from the finished lot goes to Chromate, an independent laboratory. Nothing from the run is released until the lab reports back.

    Sample received May 12, 2026

    30 mL bacteriostatic water vials beside an analytical instrument on a laboratory bench
  3. Analysed against a written specification

    Identity and benzyl alcohol concentration by RP-HPLC with UV detection. Sterility by USP <1223> BacT/ALERT. Endotoxins by kinetic chromogenic LAL assay.

    Analysis conducted May 22, 2026

    RP-HPLC chromatogram from the Chromate certificate for lot EB61901, showing the benzyl alcohol peak at 4.358 minutes
    Detail — COA #35348, lot EB61901
  4. Released with its certificate attached

    The lab issues a certificate recording every specification, result and conformance call for that lot. It is the laboratory's own document, published here exactly as it was issued — unedited, and not restated in our words.

    COA #35348 issued May 24, 2026

    Results table from the certificate for lot EB61901: identity, quantity, sterility, endotoxins and pH all conform
    Detail — COA #35348, lot EB61901
  5. Retested while it ships

    In September 2026 a sample of the same lot went to Freedom Diagnostics, a second independent laboratory, for identity by LC-MS, purity by HPLC-UV, pH, and a PCR screen for microbial DNA. Both certificates are published below, as issued.

    Accessions #2609020233 and #2609020235 reported Sep 4, 2026

    HPLC-UV chromatogram and mass spectrum from the Freedom Diagnostics certificate for lot EB61901, showing a single benzyl alcohol peak and its mass confirmation
    Detail — Accession #2609020233, lot EB61901

Lot control

What holds the standard between lots

None of it is our own testing. BacterioWater is an independent laboratory supplier: the controls below are the manufacturer’s and the laboratory’s, and our part is to publish what they document.

  • Sterility verified per lot

    Sterility is confirmed on every production lot by USP <1223> BacT/ALERT before that lot is released for sale.

  • Sealed for repeated access

    A sealed rubber-stopper vial preserved with 0.9% benzyl alcohol, built for repeated access under proper aseptic technique.

  • One lot code, every certificate

    The lot code printed on your vial label matches the certificates published on this page. Nothing ships without a release certificate.

COA library

The certificates for the lot you’ll receive

Match the lot code on your vial label to the record below. These are the issuing laboratories’ certificates, reproduced as issued — each one carries the lab’s document number and verification code, so you can check it with the laboratory instead of taking our word for it.

3 certificates · 1 lot

Your label shows a different code?

Lots rotate as production runs. Send us the code on your label with your order reference and we’ll confirm that lot’s status and its certificate.

Contact support
Lot
EB61901
Appearance
Clear liquid
Latest report
September 4, 2026
Laboratories
Freedom Diagnostics, Chromate

Identity & purity

Freedom Diagnostics · reported September 4, 2026

Identity & purity results for lot EB61901, Freedom Diagnostics Accession #2609020233, reported September 4, 2026
Identity (LC-MS)ResultBenzyl AlcoholConfirmed
Purity (HPLC-UV)Result99.84%
pHResult5.4

Method

  • HPLC with UV detection coupled with mass spectrometry (LC-MS)

Accession #2609020233 · search code Rege2609020233Signed by Alex Johnson, Principal Chemist

Verify at freedomdiagnosticstesting.com

Microbial analysis

Freedom Diagnostics · reported September 4, 2026

Microbial analysis results for lot EB61901, Freedom Diagnostics Accession #2609020235, reported September 4, 2026
Microbial Analysis (PCR)ResultNo Detectable Microbial DNAPass
pHResult5.4

Method

  • Microbial detection performed using validated polymerase chain reaction (PCR)-based assay targeting common microbial contaminants

Accession #2609020235 · search code Rege2609020235Signed by Alex Johnson, Principal Chemist

Verify at freedomdiagnosticstesting.com

Release panel

Chromate · issued May 24, 2026

Release panel results for lot EB61901, Chromate COA #35348, issued May 24, 2026
IdentitySpecificationBenzyl alcoholResultBenzyl alcoholConforms
QuantitySpecification0.9%Result0.921%Conforms
SterilitySpecificationPassResultPassConforms
EndotoxinsSpecification< 0.5 EU/mlResult< 0.25 EU/mlConforms
pHSpecification4.5 - 7.0Result6.253Conforms

Methods

  • Qualitative and quantitative chemical analysis by RP-HPLC with UV detection
  • Sterility by USP <1223> BacT/ALERT
  • Endotoxin count by kinetic chromogenic LAL assay

COA #35348 · access code EBAC444D2MUFSigned by Lucas Weber, Principal Chemist

Verify at chromate.org/verify

Test panel

What the certificates cover

8 entries, every one of them printed on a certificate above.

Identity

LC-MS · RP-HPLC with UV

Confirms the preservative present in the solution is benzyl alcohol.

Purity

HPLC-UV

Chromatographic purity of the sample by HPLC with UV detection.

Benzyl alcohol level

RP-HPLC · UV detection

Quantifies benzyl alcohol against the 0.9% formulation target.

Microbial DNA

PCR

Screens the sample for DNA from common microbial contaminants.

Sterility

USP <1223> · BacT/ALERT

Confirms no viable microbial growth is recovered from the finished vial.

Endotoxins

Kinetic chromogenic LAL

Measures bacterial endotoxin load against a < 0.5 EU/ml specification.

pH

Reported per certificate

Measured on every certificate, against the 4.5 – 7.0 range set on the release certificate.

Appearance

Reported per lot

Recorded on the certificates — lot EB61901 is a clear liquid.

Analyte
Benzyl alcohol
CAS
100-51-6
Formula
C₇H₈O
Mol. weight
108.14 g·mol⁻¹

Packaging & handling

From sealed vial to your bench

Multiple sealed 30 mL bacteriostatic water vials with pink flip-off caps

Sealed and labelled by lot

Every 30 mL vial leaves sealed, with the lot code printed on its label so it can be matched to the certificates above.

Single sealed 30 mL bacteriostatic water vial

Stored at room temperature

20 °C to 25 °C. Protect from excessive heat, strong light and freezing.

Vials nested in protective foam inside a plain cardboard shipping box

Shipped tracked from the US

Protective packaging dispatched same day from Okeechobee, FL with UPS or USPS tracking.

Handling note: opened vials are commonly dated at first access and discarded within 28 days unless a different period is specified by the laboratory’s own procedures. See the FAQ for handling questions.

Compliance

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

BacterioWater products are supplied as laboratory reagents for research and analytical applications. We publish testing records and handling conditions only — we do not provide dosing, protocol, or medical instructions of any kind.

Order from the lot you just verified

Lot EB61901 is shipping on all orders today — 30 mL vials, tracked from the US.