BPC-157 Reconstitution Calculator

This calculator determines the concentration of reconstituted BPC-157 based on your vial size and the volume of bacteriostatic water you add. Enter your values below to get the amount of peptide per unit volume. Accurate reconstitution is essential for consistent research results.

BPC-157 Reconstitution Calculator

How to Use This Calculator

1. Enter vial size in mg. Check your vial label for the peptide quantity. Common BPC-157 vials contain 5mg or 10mg. The Real Peptides BPC-157 vial contains 10mg, for example.
2. Enter water volume in mL. This is the amount of bacteriostatic water you will add to the vial. Common volumes are 1mL or 2mL. Using more water produces a lower concentration per unit volume.
3. Read concentration per unit. The calculator outputs the amount of peptide per 0.1mL (10 units on an insulin syringe). This tells you how much BPC-157 is in each measured draw.
4. Calculate your research amount. Multiply the per-unit concentration by the number of units your protocol requires. Record the values for your lab notebook.

Why Accurate Reconstitution Matters

Research on peptides relies on exact concentrations. A wrong calculation results in inconsistent results and loss of materials. There are two main mistakes that amplify this problem.

Under-Dilution and Over-Dilution Risks

Adding too little water creates a concentrated solution that is difficult to measure in small increments. Adding too much water spreads the peptide thin and may require larger draw volumes than your syringe can handle accurately. Either error introduces variability into your research protocol. The calculator above eliminates this guesswork. For more on minimizing protocol errors, see our guide to reducing BPC-157 side effects.

Bacteriostatic Water vs. Sterile Water

Bacteriostatic water contains 0.9% benzyl alcohol, which prevents the growth of microbes in the container between the injections. Sterile water does not have any preservatives and should only be used for single-draw procedures. Bacteriostatic water is preferred for multi-dose containers, and using sterile water in such containers carries an increased risk of contamination after the initial use.

Supplies You Will Need

Prior to reconstituting any peptide, ensure that you obtain the following materials. The right materials are necessary for protecting the peptide and preserving the validity of your research findings.

Bacteriostatic Water

Bacteriostatic Water USP containing 0.9% benzyl alcohol is the standard solvent for reconstituting lyophilized peptides. The cost of a 10 mg vial manufactured by Real Peptides is $4.80 (SKU # RP-BAC10V). This vial offers enough amounts of water solution for whichever dilution volume you need to reconstitute more than a few peptide vials.

Insulin Syringes

Use a 1 mL insulin syringe with 100-unit markings for both reconstituting medication and drawing it from the vial. Using a fine gauge needle reduces the risk of damage to the rubber stopper during multiple punctures. Standard gauges for this procedure are 29 and 30.

Alcohol Swabs

Prior to inserting the needle into the peptide and bacteriostatic water vials, clean both the rubber stoppers with a 70% isopropyl alcohol pad. This is an important step to prevent contamination and there should never be an exception to this practice.