Calculate bacteriostatic water volume and draw units for any vial — free for UAE research labs.
Why Accurate Reconstitution Matters
Peptide research depends on precision. Even a small miscalculation in your reconstitution process can affect the concentration of your solution — meaning you may be drawing more or less than your intended dose without realising it.
Whether you’re working with BPC-157, TB-500, Ipamorelin, or any other lyophilised peptide, the same principle applies: the volume you draw is directly determined by how much bacteriostatic water you added and the size of your syringe.
Our Peptide Reconstitution Calculator removes the guesswork entirely. Enter your details, and it instantly tells you exactly where to draw on your syringe — down to the unit mark.
For research purposes only. Not intended for human consumption.
FAQ’s
What is peptide reconstitution?
Reconstitution is the process of dissolving a lyophilised (freeze-dried) peptide powder with bacteriostatic water to create an injectable solution. The ratio of peptide to water determines the concentration — which in turn determines how many units you draw for each dose.
What is bacteriostatic water and why is it used?
Bacteriostatic water (BAC water) contains 0.9% benzyl alcohol, which prevents bacterial growth in the vial after opening. It’s the standard diluent used for reconstituting research peptides because it extends the shelf life of your solution — typically up to 28–30 days when refrigerated.
Does it matter how much BAC water I add?
Yes — significantly. The more water you add, the lower the concentration per mL, and the larger the draw volume required per dose. Using less water gives a more concentrated solution and smaller injection volumes. Most researchers use 1–2 mL per vial for practical dose volumes on standard insulin syringes.
Which syringe size should I use?
For most peptide protocols, a 0.5 mL (50-unit) insulin syringe is standard. If your calculated draw is under 10 units, a 0.3 mL syringe gives more precise measurement. For higher-volume draws, a 1.0 mL syringe may be needed. The calculator adjusts the result based on whichever syringe you select.
Can I use this calculator for any peptide?
Yes. The calculator works for any lyophilised peptide regardless of type — BPC-157, TB-500, CJC-1295, Ipamorelin, Selank, Epithalon, and more. The only variables are vial size, water volume, and desired dose — the peptide type doesn’t change the maths.
What does “units” mean on an insulin syringe?
Insulin syringes are marked in “units” rather than mL. For a 0.5 mL syringe, 50 units = 0.5 mL. For a 1.0 mL syringe, 100 units = 1.0 mL. The calculator converts your dose into the correct unit mark so you can draw directly without converting to mL yourself.
How long does a reconstituted peptide last?
Once reconstituted with bacteriostatic water, most peptides remain stable for 4–6 weeks when stored in a refrigerator at 2–8°C and kept away from light. Always discard any solution that appears cloudy, discoloured, or has visible particles.
Is this calculator free to use?
Yes, completely. The Emirates Peptides Reconstitution Calculator is a free tool available to all researchers, with no account or sign-up required.
This calculator is provided for research and informational purposes only. Emirates Peptides products are intended for laboratory research use only and are not approved for human consumption. Always follow your research protocol and consult relevant guidelines for handling research-grade compounds.
