Reconstitution calculator
Enter what is in the vial, how much bacteriostatic water you add, and the dose you want. It returns the concentration, the volume per dose, and the exact mark to draw to on an insulin syringe. Updates as you type.
Inputs
Vial · water · dosePicking a catalogue compound fills the vial size and lets us show cost per dose.
All three use the U-100 scale: 100 units is 1 ml, so 1 unit is 0.01 ml on every size.
Draw to
100 IU syringeHow the maths works
Concentration is peptide mass divided by water volume. Volume per dose is the dose divided by that concentration. On a U-100 insulin syringe every unit is 0.01 ml, so units are simply millilitres × 100.
Choosing a water volume
More water means a larger, easier-to-read draw for small doses. Less water keeps large doses inside a small syringe. Aim for a draw between roughly 5 and 50 units; the calculator flags anything outside that.
After reconstitution
Refrigerate at 2–8 °C, keep out of light, and do not shake. Use within the window recommended for the specific compound. Discard any vial that turns cloudy or shows particles.
For research use only. Not for human consumption.
This tool performs arithmetic only. It is not a dosing recommendation, not medical advice, and nothing here has been evaluated by any medicines regulator. All compounds are supplied strictly for in-vitro laboratory research. Verify every figure against the product datasheet and your own protocol before use.