Research tool
Peptide Reconstitution Calculator
Enter your vial size, bacteriostatic water volume, and desired dose to calculate exactly how many units to draw on your syringe.
Select your syringe size
Peptide vial quantity
Bacteriostatic water added
Desired dose per injection
Your result
Draw the syringe to
5units
on a 0.5 ml syringe · 0.05 ml
- Concentration
- 5000 mcg/ml
- Dose
- 0.25 mg
- Doses per vial
- ~40
- Vial size
- 10 mg
- Water added
- 2 ml
- Syringe
- 0.5 ml
Reconstitution guide
How to correctly prepare a peptide vial for research use.
Prepare your environment
Work on a clean surface with sterile gloves. You'll need the lyophilised peptide vial, a sterile syringe, bacteriostatic water, and alcohol swabs.
Bring to room temperature
Let both the peptide vial and the bacteriostatic water reach room temperature before reconstituting.
Disinfect the stoppers
Remove the centre of the metal cap and wipe each rubber stopper with an alcohol swab.
Add the water slowly
Draw the required bacteriostatic water, tilt the vial ~45°, and let the water run gently down the inner wall to minimise foaming.
Dissolve gently
Do not shake. Swirl or roll the vial between your palms until the solution is completely clear.
Store correctly
Keep reconstituted solution refrigerated (about +4°C) for short-term use and avoid repeated freeze-thaw cycles.
How the calculation works
Concentration (mcg/ml) = (vial mg × 1,000) ÷ water ml
Volume needed (ml) = dose mg × 1,000 ÷ concentration
Units to draw = (volume ÷ syringe ml) × syringe units
Example: a 10 mg vial + 2 ml water = 5,000 mcg/ml. For a 0.25 mg dose: (0.25 × 1,000) ÷ 5,000 = 0.05 ml. On a 0.5 ml / 50-unit syringe: (0.05 ÷ 0.5) × 50 = 5 units.
This calculator is provided for laboratory reconstitution reference only. All products are sold strictly for laboratory and research use only. They are not for human or veterinary consumption, and no medical, dosing, or usage guidance is provided. By ordering you confirm you are 18+ and acquiring these materials for legitimate research purposes. It does not constitute medical advice or a dosing guide.