Reconstitution calculator

Calculate the resulting concentration when reconstituting lyophilised peptides using bacteriostatic water. Enter your peptide mass and diluent volume (BAC water) to determine the solution concentration.

Syringe Volume
Peptide Vial Quantity (mg)
Bacteriostatic Water (mL)
Amount per Draw (mg)
Pull the syringe to

10.0 units 0.100 mL

Concentration
5.00 mg/mL
Draws per vial
20

Uses 2 mL of bacteriostatic water per vial. Shop bacteriostatic water ›

For laboratory research use only. This tool performs a volume calculation and does not recommend any amount.

How to use this calculator

  1. Syringe Volume: Choose the size of insulin syringe you’re using (0.3 mL, 0.5 mL or 1 mL).
  2. Peptide Vial Quantity: Enter how much lyophilised peptide bought from Peptide House is in the vial, in milligrams (mg). You’ll find this on the vial label.
  3. Bacteriostatic Water: Enter how much bacteriostatic water you’ll add to the vial, in millilitres (mL).
  4. Desired Dosage: Enter the amount you want in each draw, in milligrams (mg).

Reconstitution guidelines

  • Use [bacteriostatic water] (BAC water) as your diluent when the vial will be drawn from more than once. It contains benzyl alcohol as a preservative, which keeps the vial suitable for repeated withdrawals, something plain sterile water can’t do.
  • Aim the diluent at the inside glass wall of the vial so it runs down gently, rather than spraying it straight onto the lyophilised powder.
  • Swirl the vial gently until the peptide has fully dissolved. Avoid shaking it.
  • Keep reconstituted peptides refrigerated at 2 to 8 °C and use them within 28 days.
  • Follow sterile technique at every step to avoid contamination.

Disclaimer

This calculator is provided as a reference tool for research purposes only. All peptides sold by Peptide House are intended for laboratory research use only and are not for human consumption. Always follow your institution’s protocols and safety guidelines when handling research compounds.