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Bacteriostatic Water 10ml
Sterile 0.9% Benzyl Alcohol Diluent — The Standard for Multi-Use Reconstitution
Bacteriostatic water is sterile water for injection preserved with 0.9% benzyl alcohol, the bacteriostatic agent that inhibits microbial growth and allows a reconstituted vial to be accessed multiple times over a 28-day window. It is the standard diluent used across peptide research laboratories — sterile water and saline contain no preservative and are single-use only. Each 10ml multi-dose vial is USP-grade, sealed with a butyl rubber stopper and aluminium crimp, and shipped with every batch tested for sterility and endotoxin.
- 0.9% benzyl alcohol preserved — one vial supports repeated withdrawals over 28 days
- USP-grade, sterility- and endotoxin-tested per lot, non-pyrogenic and pH-neutral
- The standard diluent used across every peptide protocol we ship
10ml per vial · Sterile Solution · Ships same business day from Toronto
Questions about this batch? Text an agent at (905) 993-4764
0.9%
Benzyl alcohol
USP monograph bacteriostatic preservative concentration
10ml
Multi-dose vial
Butyl rubber stopper, aluminium crimp seal
28 days
In-use window
After first puncture, stored at 2–8°C
Research benefits
28-Day Multi-Use
0.9% benzyl alcohol inhibits bacterial growth, allowing repeated withdrawals from one reconstituted vial
USP Grade & Sterile
Manufactured to USP monograph standards; each lot sterility- and endotoxin-tested
Preserves Peptide Integrity
Neutral pH, non-pyrogenic diluent chosen to avoid degradation of reconstituted peptides
Study findings
Summaries of published research on this compound. Findings are reported for scientific context only and do not constitute claims about this product.
USP monograph — Bacteriostatic Water for Injection
Specifies sterile water for injection containing one or more suitable antimicrobial agents, with benzyl alcohol 0.9% as the conventional preservative for multi-dose containers.
United States Pharmacopeia · Current
Antimicrobial effectiveness of benzyl alcohol
Benzyl alcohol at 0.9% met USP <51> antimicrobial effectiveness criteria against bacterial and fungal challenge organisms in parenteral formulations.
PDA Journal of Pharmaceutical Science and Technology · 2011
Multi-dose vial in-use stability
Preserved multi-dose parenteral vials maintained sterility across repeated punctures within a 28-day refrigerated in-use window under aseptic technique.
American Journal of Health-System Pharmacy · 2015
Peptide stability in aqueous diluents
Lyophilized peptides reconstituted in neutral-pH preserved water retained assay potency substantially longer under refrigeration than at ambient temperature.
Journal of Pharmaceutical Sciences · 2013
What researchers report
Aggregated, anonymized observations from laboratories ordering this compound. Anecdotal and non-clinical.
The single most reordered SKU in our catalogue — nearly every peptide order includes at least one vial.
Researchers typically report ordering one 10ml vial per two to three 5mg peptide vials.
Slow injection down the vial wall is the most-cited technique note for preserving reconstituted peptide integrity.
Labs running short protocols occasionally prefer unpreserved sterile water; the preserved format is standard for multi-day designs.
Technical specifications
| Form | Sterile Solution |
| Sequence | Sterile water for injection + 0.9% benzyl alcohol |
| Molecular Weight | 18.02 g/mol (H₂O) |
| Purity | USP Grade |
| Amount | 10ml per vial |
| Storage | Store at -20°C, protect from light |
| Shelf Life | 24 months unopened (room temperature); 28 days after first puncture |
| COA | COA Available → View Lab Results |
Storage & reconstitution
Store unopened vials at room temperature (20–25°C); do not freeze.
Swab the stopper with 70% isopropyl alcohol before every withdrawal.
Inject the diluent slowly down the inner wall of the peptide vial — never directly onto the lyophilized powder.
Discard 28 days after first puncture, or immediately if cloudiness or particulate is observed.
Research background
Benzyl alcohol at 0.9% w/v is the preservative specified in the USP monograph for Bacteriostatic Water for Injection.
Unpreserved sterile water and 0.9% sodium chloride are single-use; once punctured they must be discarded, which is why bacteriostatic water is standard for multi-day research protocols.
The accepted in-use window after first puncture is 28 days when stored refrigerated at 2–8°C.
Frequently stacked with
BPC-157
15-amino acid gastric pentadecapeptide for tissue repair research.
COA AvailableAvailable in 5mg · 10mg
TB-500
Synthetic Thymosin Beta-4 fragment for regeneration studies.
COA AvailableAvailable in 5mg · 10mg
NAD+
Cellular coenzyme for mitochondrial, DNA-repair and longevity research.
COA AvailableAvailable in 500mg · 1000mg
Third-party verified
ISO 17025 accredited lab — Batch TR-BAC-2026-001
HPLC Purity
0.9% benzyl alcohol (assay 98.6–101.2%)
Molecular Weight
✓ Verified
Endotoxin (LAL)
<0.25 EU/mL
Heavy Metals (ICP-MS)
✓ Pass
Bacteriostatic Water 10ml — frequently asked
How is this different from sterile water?
Sterile water contains no preservative and is single-use. Bacteriostatic water contains 0.9% benzyl alcohol, which inhibits microbial growth and supports multiple withdrawals over 28 days.
How much do I need per peptide vial?
It depends on the concentration your protocol calls for — typically 1–3ml per 5mg vial. One 10ml vial usually covers several peptide vials.
Does it need refrigeration?
Unopened vials are stable at room temperature. Refrigerate at 2–8°C after first puncture.
Is a COA included?
Yes — each lot ships with sterility, endotoxin, benzyl alcohol assay and heavy metals (ICP-MS) results.
How fast does it ship?
Orders placed before 2pm ET ship the same business day from Toronto with tracked Canada-wide delivery, typically arriving in 1–3 business days. Cold-pack packaging is used on every shipment.
What if the purity doesn't match the COA?
Every batch is HPLC and mass-spec verified by an ISO 17025 accredited third-party lab, and the batch-matched COA ships with your order. If an independent test comes back below the stated purity, we replace the order or refund it in full.
Is this legal to purchase in Canada?
Yes — these compounds are sold strictly as in-vitro research chemicals for laboratory use. They are not for human or veterinary use, and it is the purchaser's responsibility to comply with applicable federal and provincial regulations.
Ready to add Bacteriostatic Water 10ml to your research?
USP Grade HPLC-verified, endotoxin and heavy metals tested, batch-matched COA included. Ships same business day from Toronto.
Research Use Only Disclaimer
This product is sold exclusively for in-vitro research and laboratory use only. It is NOT intended for human or veterinary use, consumption, injection, or any clinical application. This product has not been evaluated by Health Canada, the FDA, or any other regulatory authority for safety or efficacy in humans or animals. Trinity makes no medical claims regarding this compound. Researchers must comply with all applicable federal, provincial/state, and local laws regarding the purchase, storage, and use of research compounds. By purchasing this product, you confirm you are a qualified researcher or licensed professional acting within the bounds of applicable law.