Peptide reconstitution calculator
Work out exactly how far to pull the syringe. Choose your syringe size, vial strength, solvent volume and required amount per draw — the calculator does the rest in real time.
What is the total volume of your syringe?
How much peptide is in your vial?
How much bacteriostatic water are you adding?
How much peptide do you want per draw?
This tool performs generic dilution math for laboratory reconstitution of research reagents. It is not medical advice, and PepSource does not provide dosing guidance for human or veterinary application.
Calculator FAQs
What does "units" mean on the syringe?
Insulin syringes are marked in units. On a standard U-100 syringe, 100 units equal 1 ml — so 10 units equal 0.1 ml. The calculator converts your draw volume into these units automatically.
Does adding more water change the strength of the vial?
No. The total amount of peptide in the vial stays the same — more water simply means a lower concentration per ml, so you pull the syringe further for the same amount of material.
Which syringe size should I choose?
Pick the syringe you actually intend to use in the lab. If your calculated draw exceeds the syringe capacity, the calculator will warn you — reduce the water volume or use a larger syringe.