Introduction Lyophilized (freeze-dried) research peptides arrive as a powder for maximum stability and shelf life. Before use in laboratory settings, they must be reconstituted with bacteriostatic water (BAC water). Proper reconstitution ensures the peptide remains potent, sterile, and easy to dose accurately.
Important Disclaimer: All products on Seacoast Aminos are strictly for research use only (RUO) and not for human or veterinary consumption. This guide is for educational purposes in a controlled lab environment.
Why Use Bacteriostatic Water?
- Contains 0.9% benzyl alcohol as a preservative
- Inhibits bacterial growth for multi-dose use (refrigerated)
- Preferred over sterile water for peptides that will be used over several days or weeks
Seacoast Aminos offers both 5ML BAC Water and premium Hospira Brand BAC Water 30ML — ideal for reconstituting your research peptides.
Supplies You’ll Need
- Lyophilized peptide vial (e.g., BPC-157 10mg, SNAP-8 10mg)
- Bacteriostatic water
- Alcohol swabs
- Sterile insulin syringe (0.3mL–1mL, 29–31 gauge)
- Gloves (optional but recommended)
- Clean workspace
Step-by-Step Reconstitution Protocol
- Prepare Your Workspace Wash hands thoroughly. Clean your surface. Bring peptide and BAC water vials to room temperature (10–15 minutes) to prevent condensation.
- Sanitize Wipe the rubber stoppers of both the peptide vial and BAC water vial with an alcohol swab. Let dry completely.
- Draw BAC Water Use your sterile syringe to draw the desired amount of bacteriostatic water. Common volumes:
- 5mg vial → 2mL BAC water (2.5mg/mL concentration)
- 10mg vial → 2mL or 3mL BAC water
- 10mg BPC-157 + TB-500 blend → 3mL for easy math
- Inject Slowly Insert the needle into the peptide vial at a slight angle. Aim the stream down the inside wall of the vial — never directly onto the powder. Inject very slowly to avoid foaming.
- Mix Gently Remove the syringe. Gently swirl or roll the vial between your palms until the powder fully dissolves. Never shake — shaking can damage delicate peptide chains.
- Label and Store Label the vial with the date and concentration. Refrigerate immediately (2–8°C / 35–46°F). Protect from light. Use within 2–4 weeks for best results.
Concentration & Dosing Math Examples
| Peptide | Vial Size | BAC Water Added | Concentration | Example Dose Calculation |
|---|---|---|---|---|
| BPC-157 | 5mg | 2mL | 2.5mg/mL (2500mcg/mL) | 250mcg = 10 units (0.1mL) on U-100 syringe |
| BPC-157 | 10mg | 2mL | 5mg/mL (5000mcg/mL) | 500mcg = 10 units |
| TB-500 | 5mg | 2mL | 2.5mg/mL | 2mg = 80 units |
| SNAP-8 | 10mg | 2mL | 5mg/mL | Adjust per research protocol |
Pro Tip: Choose volumes that make your math easy (whole numbers on insulin syringes).
Common Mistakes to Avoid
- Shaking the vial — Creates shear stress and foam that degrades the peptide.
- Injecting water directly on powder — Can cause clumping or denaturation.
- Using sterile water instead of BAC water — Shorter shelf life once reconstituted.
- Not refrigerating — Reduces stability.
- Repeated freeze-thaw cycles — Bad for potency.
- Using expired or cloudy solution — Discard if it looks off.
Storage Guidelines
- Unreconstituted (lyophilized): Freezer or cool, dark place (longest shelf life).
- Reconstituted: Refrigerator only.
- Keep away from direct light and heat.
Final Tips for Best Results
- Work in a clean environment.
- Always use fresh alcohol swabs.
- Start with smaller test batches if you’re new to reconstitution.
- Track your concentrations accurately for consistent research data.
Ready to get started? Browse our premium research peptides and bacteriostatic water here at Seacoast Aminos. Fast USA shipping and lab-grade quality guaranteed.
Questions? Drop a comment below or contact us — we’re happy to help with product recommendations.