Bacteriostatic Water
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Technical Specifications
USP Pharmaceutical-Grade Solvent
0.9%Benzyl AlcoholUSP-standard preservative concentration — prevents bacterial & fungal growth for 28 days post-puncture
28 daysMulti-Dose WindowUSP-certified preservative efficacy window — single-use sterile water must be discarded immediately
100%Catalog CompatibleCompatible with all peptides in our catalog that dissolve at neutral pH
50+ yrsClinical HistoryStandard pharmaceutical solvent since FDA recognition of benzyl alcohol in the 1970s
Specifications
Grade
USP (United States Pharmacopeia)
Preservative
0.9% Benzyl Alcohol (9 mg/mL)
pH Range
4.5–7.0 (typ. 5.7)
Sterility
Sterile, non-pyrogenic
Endotoxin
<0.25 USP EU/mL
Manufacturing
FDA-registered, cGMP facilities
Multi-Dose Window
28 days after first puncture
Shelf Life (Unopened)
36 months at 15–30°C
Peptide Compatibility
Which compounds use this solvent
BAC water is the default reconstitution solvent for all peptides that dissolve at neutral pH. For peptides prone to aggregation at neutral pH (IGF-1 LR3, AOD-9604, MOTS-c), use Acetic Acid 0.6% instead.
BPC-157BAC Water
TB-500BAC Water
GHK-CuBAC Water
IpamorelinBAC Water
SemaglutideBAC Water
TirzepatideBAC Water
SelankBAC Water
SemaxBAC Water
PT-141BAC Water
EpithalonBAC Water
DSIPBAC Water
Melanotan I / IIBAC Water
SermorelinBAC Water
IGF-1 LR3Acetic AcidAggregates at neutral pH
AOD-9604Acetic AcidMay aggregate
MOTS-cEitherBatch-dependent
Preservative Science & Research Protocol
Solvent science, reconstitution protocol, and storage
Preservative Science
Benzyl alcohol at 0.9% concentration disrupts bacterial cell membranes through lipid bilayer interaction, providing broad-spectrum antimicrobial protection without denaturing dissolved peptides. This mechanism has been validated across 50+ years of pharmaceutical use and is codified in the United States Pharmacopeia as the standard for multi-dose injectable preparations.
Research Protocol
- Sanitize rubber stoppers of both vials with 70% isopropyl alcohol swabs. Air dry 10 seconds.
- Calculate reconstitution volume based on desired concentration (typical: 1–2 mL per peptide vial).
- Draw calculated volume of BAC water using a sterile insulin syringe (25–29G).
- Inject slowly against the inside wall of the peptide vial — never directly onto lyophilized powder.
- Allow 1–2 minutes for dissolution. If needed, gently roll between palms. Never shake.
- Verify solution is clear and colorless before use. Discard if cloudy or particulate.
- Label vial with reconstitution date and volume. Refrigerate at 2–8°C immediately.
Storage Requirements
Unopened15–30°C (59–86°F), protect from light — 36-month shelf life
After First PunctureUse within 28 days — benzyl alcohol efficacy guaranteed
Reconstituted PeptidesRefrigerate at 2–8°C (36–46°F), protect from light
Important
—Do NOT freeze — freezing degrades benzyl alcohol preservative and causes phase separation
—Discard if solution appears cloudy, discolored, or contains particles
—Use a fresh sterile needle for each vial access
—Not for use by subjects with known benzyl alcohol sensitivity