Peptide Reconstitution Calculator
Calculate bacteriostatic water volumes for peptide mixing. Visualizes U-100 syringe tick marks for precise dosing in mg or mcg.
About
Peptides are often supplied as lyophilized powder requiring reconstitution with bacteriostatic water. The math involves determining how much liquid to add to the vial to ensure a specific volume (e.g., a tick mark on an insulin syringe) corresponds to a desired dose. This calculator solves the dilution equation and maps the result to a standard U-100 syringe (1mL = 100 units), reducing the risk of calculation errors common when converting between micrograms and milligrams.
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Formulas
The volume to inject (Vinj) is determined by:
Vinj = DesiredDoseVialQty × WaterVol
To convert this to "Units" or "Ticks" on a U-100 syringe:
Ticks = Vinj × 100
Reference Data
| Vial Content | Water Added | Resulting Conc. | 10 Unit Tick Mark |
|---|---|---|---|
| 2 mg (2000 mcg) | 1 mL | 2 mg/mL | 200 mcg |
| 5 mg (5000 mcg) | 2 mL | 2.5 mg/mL | 250 mcg |
| 10 mg (10000 mcg) | 2 mL | 5 mg/mL | 500 mcg |
Frequently Asked Questions
It is a standard insulin syringe where 1 mL of liquid is divided into 100 small units. 10 units on the syringe equals 0.1 mL.
This calculator assumes a single vial reconstitution. If mixing multiple vials, calculate the total mass relative to the total liquid volume manually first.