Tested batch: NA
Bacteriostatic Water is sterile water containing 0.9% benzyl alcohol. Each box contains 10 vials, with 10ml per vial. Used for reconstitution of lyophilized peptides.
Specifications: SKU BW10 · 10 vials per box · 10ml per vial. Testing: Kovera Labs reports cover a water analysis (benzyl alcohol 0.90%, GC purity 99.9%), endotoxin (< 0.04 EU/mL) and heavy metals – see the certificates below. Further reading: Bacteriostatic Water in Australia: product overview and Bacteriostatic Water: a research guide to evaluating suppliers. For laboratory research use only; not for human consumption.
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This product is strictly intended for laboratory research use only. Not for human consumption. All products sold are for research purposes and should only be handled by qualified professionals in a controlled laboratory environment.
Tested batch: NA · 3 published certificates. Report library updated .
0.9% benzyl alcohol bacteriostatic water, 10 ml – three Kovera Labs reports. Batch: NA. Water analysis: benzyl alcohol 0.90% (stated criterion 0.9% ± 10%) and GC purity 99.9%, with a microbial screen recording no growth and no fungi detected over a 2-day incubation (BAC-KVR-2026-34F98D, 10 July 2026). Endotoxin: < 0.04 EU/mL against a stated ≤ 0.5 criterion (ENDO-KVR-2026-34F98D). Heavy metals: lead < 0.5, arsenic < 0.15, cadmium < 0.05 and mercury < 0.3 ppm (HM-KVR-2026-34F98D). Each certificate links to its Kovera Labs verification record. For laboratory research use only.
| Test | Reported result | Report ID | Report date |
|---|---|---|---|
| Bacteriostatic Water Analysis | Benzyl alcohol content: 0.90 %; Purity (GC): 99.9 % | BAC-KVR-2026-34F98D | 10 July 2026 |
| Endotoxin | Endotoxin: < 0.04 EU/mL | ENDO-KVR-2026-34F98D | 10 July 2026 |
| Heavy Metals | Lead: < 0.5 ppm; Arsenic: < 0.15 ppm; Cadmium: < 0.05 ppm; Mercury: < 0.3 ppm | HM-KVR-2026-34F98D | 10 July 2026 |
Read how to interpret and verify a Kovera Labs report or browse our testing standards and report directory.
Verify this certificate on Kovera Labs
| Reported test | Result | Stated criterion | Method, where stated |
|---|---|---|---|
| Benzyl alcohol content | 0.90 % | 0.9% +/- 10% | — |
| Purity (GC) | 99.9 % | ≥ 99.5% | — |
| Endotoxin | < 0.10 EU/mL | <= 0.5 EU/mL | — |
| Sterility / microbial screen | No Growth | — | — |
| Fungi | Not Detected | — | — |
| Incubation period | 2 days | — | — |
| Heavy-metal screen | PASS | — | — |
Verify this certificate on Kovera Labs
| Reported test | Result | Stated criterion | Method, where stated |
|---|---|---|---|
| Endotoxin | < 0.04 EU/mL | ≤ 0.5 | — |
| Final determination | PASS | — | — |
Verify this certificate on Kovera Labs
| Reported test | Result | Stated criterion | Method, where stated |
|---|---|---|---|
| Lead | < 0.5 ppm | ≤ 10 | ICP-MS |
| Arsenic | < 0.15 ppm | ≤ 1.5 | ICP-MS |
| Cadmium | < 0.05 ppm | ≤ 0.5 | ICP-MS |
| Mercury | < 0.3 ppm | ≤ 3 | ICP-MS |
Evidence reviews and laboratory guides relevant to Bacteriostatic Water 10ml, plus the testing behind each batch.
Bacteriostatic water is sterile water containing benzyl alcohol as an antimicrobial preservative. In the laboratory it is used as a diluent when reconstituting lyophilised research materials.
A 2007 review of licensed parenteral products found that phenol and benzyl alcohol were the two most common antimicrobial preservatives in peptide and protein products (Meyer et al., 2007). Reviews describe how a preservative is chosen for its antimicrobial effectiveness and its compatibility with the active ingredient, including effects on peptide and protein stability (Meyer et al., 2007; Stroppel et al., 2023). Compatibility with a specific research material is not established by these reviews.
About the evidence. Findings reported in published studies relate to the materials used in that work. This product is supplied by Eternal Peptides Wholesale for laboratory research use only and is not for human or veterinary use. Its Kovera Labs reports are published on this page and in the COA library.
Explore Bacteriostatic Water research, Australian buying guides and laboratory documentation.
