BPC-157 Reconstitution Calculator: BAC Water Volumes & Concentration Tables for Lab Research
DISCLAIMER: BPC-157 is a research chemical intended exclusively for qualified laboratory use in preclinical and in vitro research settings. It is not approved by the FDA for use in humans or animals. All concentration calculations and protocols described on this page are provided solely for laboratory research purposes. Nothing herein constitutes medical advice, dosing guidance, or instructions for self-administration. Always follow your institution's standard operating procedures and biosafety requirements. Palmetto Peptides supplies research-grade peptides for scientific investigation in compliance with all applicable law.
BPC-157 Reconstitution Calculator: BAC Water Volumes & Concentration Tables for Lab Research
Last Updated: May 2026 | Reading Time: ~8 minutes | Author: Palmetto Peptides Research Team
When preparing BPC-157 for preclinical or in vitro research, the most common source of experimental error is not the peptide itself — it is the reconstitution math. Adding the wrong volume of bacteriostatic water produces a solution of unknown concentration, which makes data across experiments impossible to compare.
This page provides reference concentration tables for every vial size Palmetto Peptides carries. The tables tell you exactly how much BAC water to add to achieve standard working concentrations, so you can move from lyophilized vial to quantified research solution without running the arithmetic from scratch each time.
For the full step-by-step reconstitution protocol — equipment, aseptic technique, solvent injection method, vial handling — see our detailed BPC-157 Reconstitution Protocol guide. This page focuses exclusively on the concentration math.
BPC-157: Research Background
Body Protection Compound-157 (BPC-157) is a 15-amino acid synthetic peptide derived from a protective protein found in gastric juice. In preclinical research, it has been studied for its effects on angiogenesis, nitric oxide signaling, tendon and muscle tissue models, and gastrointestinal mucosal integrity. It is a widely used tool compound in wound healing and connective tissue biology research.
Palmetto Peptides supplies BPC-157 as a lyophilized (freeze-dried) powder in two standard vial sizes: 5mg and 10mg. All lots ship with a third-party HPLC purity certificate confirming ≥98% purity and mass spectrometry identity verification.
View BPC-157 Research Peptide →
The Reconstitution Formula
All concentration calculations use one formula:
Volume to add (mL) = Peptide mass (mg) ÷ Target concentration (mg/mL)
The tables below apply this formula to Palmetto's standard BPC-157 vial sizes across the most common working concentrations used in laboratory research.
Important: Always confirm the actual fill weight from the Certificate of Analysis (COA) before calculating. A vial labeled "5mg" may contain 4.85mg or 5.1mg depending on fill tolerance. Use the COA fill weight — not the labeled amount — for precise concentration control.
BPC-157 Concentration Calculator — 5mg Vial
| Target Concentration | BAC Water to Add | Total Solution Volume |
|---|---|---|
| 0.5 mg/mL | 10.0 mL | 10.0 mL |
| 1.0 mg/mL | 5.0 mL | 5.0 mL |
| 2.0 mg/mL | 2.5 mL | 2.5 mL |
| 5.0 mg/mL | 1.0 mL | 1.0 mL |
Based on a nominal fill weight of 5.0mg. Adjust proportionally using your COA fill weight.
BPC-157 Concentration Calculator — 10mg Vial
| Target Concentration | BAC Water to Add | Total Solution Volume |
|---|---|---|
| 0.5 mg/mL | 20.0 mL | 20.0 mL |
| 1.0 mg/mL | 10.0 mL | 10.0 mL |
| 2.0 mg/mL | 5.0 mL | 5.0 mL |
| 5.0 mg/mL | 2.0 mL | 2.0 mL |
Based on a nominal fill weight of 10.0mg. Adjust proportionally using your COA fill weight.
Adjusting for Actual COA Fill Weight
If your COA shows a fill weight that differs from the nominal amount, recalculate using the formula:
Example: COA fill weight = 9.82mg, target concentration = 2.0 mg/mL Volume to add = 9.82 ÷ 2.0 = 4.91 mL BAC water
This adjustment is especially important when precise concentration control is required for dose-response studies or when comparing results across multiple vials or lots.
Solvent Selection for BPC-157 Reconstitution
Bacteriostatic water (0.9% benzyl alcohol) is the preferred solvent for BPC-157 research solutions in most laboratory protocols. The benzyl alcohol preservative inhibits microbial growth in the reconstituted solution, extending the usable window for stored samples compared to plain sterile water.
Sterile water for injection is appropriate for single-use protocols where the entire reconstituted volume will be used immediately. It provides no preservative benefit and should not be used for solutions intended to be stored and used over multiple research sessions.
Palmetto Peptides supplies pharmaceutical-grade Bacteriostatic Water (BAC Water) 10mL vials packaged for research use.
Aliquot Volume Reference
After reconstitution, many researchers aliquot the solution into smaller volumes to avoid repeated freeze-thaw cycles of the working stock. The table below shows how many 100μL aliquots a reconstituted vial yields at each concentration:
| Vial Size | Concentration | Total Volume | 100μL Aliquots |
|---|---|---|---|
| 5mg | 1.0 mg/mL | 5.0 mL | 50 aliquots |
| 5mg | 2.0 mg/mL | 2.5 mL | 25 aliquots |
| 10mg | 1.0 mg/mL | 10.0 mL | 100 aliquots |
| 10mg | 2.0 mg/mL | 5.0 mL | 50 aliquots |
Storage Conditions
| Form | Recommended Storage | Notes |
|---|---|---|
| Lyophilized (unreconstituted) | -20°C, desiccated | Stable for 24+ months when properly stored |
| Reconstituted in BAC water | 2–8°C, protected from light | Use within timeframe per your lab SOPs |
| Aliquoted in microcentrifuge tubes | -20°C | Limit freeze-thaw cycles; thaw only what is needed |
Frequently Asked Questions
How much BAC water do I add to a 5mg BPC-157 vial for 1 mg/mL? Add 5.0 mL of bacteriostatic water. This yields a 1 mg/mL research solution in a total volume of 5.0 mL.
How much BAC water do I add to a 10mg BPC-157 vial for 2 mg/mL? Add 5.0 mL of bacteriostatic water. Using the formula: 10mg ÷ 2 mg/mL = 5.0 mL.
Should I use bacteriostatic water or sterile water for BPC-157? Use bacteriostatic water for any protocol where the solution will be stored. Use sterile water only for immediate single-use applications.
What happens if I add too much or too little water? Adding too much water produces a lower-than-intended concentration; too little produces a higher concentration. Both introduce systematic error into your research data. Always use a calibrated syringe and confirm the volume before adding.
Does BPC-157 dissolve easily in BAC water? Lyophilized BPC-157 is generally highly soluble in aqueous solvents. If the lyophilized cake does not dissolve within 1–2 minutes of gentle agitation, allow additional time before adding more solvent. Never vortex vigorously; gentle rolling or inversion is preferred to maintain peptide integrity.
Source Your BPC-157 from Palmetto Peptides
Accurate concentration math starts with accurate mass. If your lyophilized peptide fill weight is inconsistent or the COA is missing, your calculations are meaningless before you begin.
Palmetto Peptides supplies BPC-157 with:
- Third-party HPLC purity verification (≥98%)
- Mass spectrometry identity confirmation
- Lot-specific certificate of analysis with actual fill weight
- Lyophilized for maximum stability
Order BPC-157 Research Peptide →
Related research tools:
- TB-500 Research Peptide — Thymosin Beta-4 fragment, commonly studied alongside BPC-157
- BPC-157 + TB-500 Wolverine Stack — pre-matched vial set
- Bacteriostatic Water (BAC Water) — pharmaceutical-grade reconstitution solvent