Bacteriostatic water.
The sterile diluent every lyophilized peptide protocol needs — back in stock while Amazon has it pulled.
USP-grade 0.9% benzyl alcohol water. Multi-dose, sterility-tested, manufactured in an FDA-registered compounding facility. Ships with every Aurex kit or standalone.
30ml Single Vial
30ml
$0.50 / ml
Single vial. Sterile, multi-dose, USP-grade 0.9% benzyl alcohol water.
SKU · BACW-30
Reserve at launch →
3-Pack · 90ml Total
3 × 30ml
$0.39 / ml
Three 30ml vials. Standard protocol-duration supply for extended research.
SKU · BACW-90
Reserve at launch →
Lab Pack · 12 × 30ml
12 × 30ml
$0.33 / ml
Twelve vials. Sized for lab-scale protocols and extended-horizon studies.
SKU · BACW-360
Reserve at launch →
Free with pre-launch tiers
- · Founders Circle — free 30ml vial with every research kit
- · Whitelist — free 10ml bottle with your first launch order
- · Research stacks $150+ — free 3ml vial paired at ship time
Why this matters.
Amazon delisted bacteriostatic water in Q1 2026. Most retailers followed. Researchers running active protocols got stranded.
USP <797> sterile
Manufactured under sterile compounding standards. Every batch tested for endotoxin, bioburden, and preservative concentration.
Lyophilized-peptide compatible
0.9% benzyl alcohol preserves multi-dose sterility without interfering with peptide stability at recommended concentrations.
Ships with kits
Bundle your diluent with the research kit it'll reconstitute. One order, one shipment, zero scramble at the bench.
Domestic US, discreet
Vacuum-sealed, plain outer packaging, 1–3 business day transit. Crypto payments get 8% off the entire order.
Technical specs.
Everything on the release record.
| Grade | USP (United States Pharmacopeia) |
| Composition | Sterile water + 0.9% benzyl alcohol (preservative) |
| Sterility testing | USP <71> — every lot |
| Endotoxin limit | < 0.25 EU/ml |
| Vial | 30ml clear borosilicate, rubber-stopper, flip-cap |
| Shelf life (unopened) | 24 months at room temperature, protected from light |
| Shelf life (opened) | 28 days refrigerated (2–8°C) |
| Intended use | Reconstitution of lyophilized research compounds — in-vitro research only |
FAQ
What is bacteriostatic water?+
Bacteriostatic water is USP-grade sterile water containing 0.9% benzyl alcohol as a bacteriostatic preservative. It is the standard diluent for reconstituting lyophilized research peptides. Unlike sterile water for injection (single-use), bacteriostatic water is multi-dose — the benzyl alcohol inhibits microbial growth, allowing reuse of the same vial over a protocol duration.
Why is Aurex selling bacteriostatic water?+
Amazon and most major retailers have removed bacteriostatic water from listings, creating a supply gap for active researchers. Aurex carries it because every lyophilized peptide kit requires a diluent to reconstitute. Selling it directly means researchers can order peptide kits and their reconstitution solvent in one transaction, one shipment, with guaranteed sterility.
How much bacteriostatic water do I need per peptide vial?+
Typical reconstitution uses 2–5ml of bacteriostatic water per vial, depending on peptide mass and target concentration. A 30ml vial reconstitutes roughly 6–15 peptide vials. Check each Aurex product page for the recommended reconstitution ratio.
Is this USP-grade?+
Yes. Aurex bacteriostatic water is USP-grade (United States Pharmacopeia), manufactured in an FDA-registered sterile compounding facility, and released only after passing sterility, endotoxin, and benzyl alcohol concentration testing per USP <797> and USP <71>.
How should I store bacteriostatic water?+
Store unopened vials at room temperature (20–25°C / 68–77°F), protected from light. Once opened, refrigerate at 2–8°C and discard after 28 days per USP preservative-efficacy guidance. The benzyl alcohol concentration maintains sterility within this window; beyond it, microbial risk rises.
Is bacteriostatic water FDA approved for human use?+
Aurex distributes bacteriostatic water strictly for in-vitro laboratory research use. It is not sold for human consumption, injection, or veterinary use. Researchers are responsible for compliance with all applicable laws.
Do I get free bacteriostatic water with Founders or Whitelist orders?+
Yes. Founders Circle orders include a free 30ml bacteriostatic water vial (paired with every research kit). Whitelist members receive a free 10ml bottle with their first launch order. All research stack orders at $150+ include a free 3ml BAC water vial by default.
Can I ship bacteriostatic water internationally?+
At launch, Aurex ships domestic US only. International shipping for bacteriostatic water and all research products is Phase 2, subject to origin/destination regulatory review.
Research-use disclaimer
For laboratory research use only. Not for human consumption, veterinary use, food additive, cosmetic, or household application. Not FDA approved. Products are sold strictly for in-vitro research purposes by qualified researchers.