Peptide Reconstitution Calculator
Peptide Reconstitution Calculator
Use this research reconstitution calculator to convert peptide mass and solvent volume into a working solution concentration. It also calculates the solvent volume, peptide mass, or desired concentration per 0.1 mL when the other two values are known.
This is laboratory math for research-use-only (RUO) materials and does not establish solvent compatibility, handling requirements, or experimental suitability.
Reconstitution calculator
Choose the value to calculate, then enter the other two values. Values are shown using mass and volume units commonly used in laboratory documentation.
Concentration (mcg/mL) = peptide mass (mg) Γ 1,000 Γ· solvent volume (mL)Desired concentration per 0.1 mL = concentration (mcg/mL) Γ 0.1Volume per desired amount (mL) = desired amount (mcg) Γ· concentration (mcg/mL)Laboratory reconstitution overview
Bacteriostatic water (often called BAC water) is a water preparation that contains a bacteriostatic preservative, commonly 0.9% benzyl alcohol. A solvent should be selected only when it is compatible with the specific research material and the documented laboratory method.
For a general research workflow, verify the material identity and peptide mass, confirm the supplier's solvent and storage documentation, calculate the required solvent volume, then use calibrated laboratory equipment to prepare and label the solution. Mix only as permitted by the material's instructions and maintain the documented storage conditions. For additional laboratory context, see IronPeak's Peptide Reconstitution Guide & Calculator.
Frequently asked questions
How to reconstitute peptides for research?
Begin with the research material's documented mass, solvent compatibility, and storage requirements. The calculator provides the concentration math; the actual preparation should follow the validated laboratory procedure for that specific material.
How does a peptide reconstitution calculator work?
A peptide reconstitution calculator divides total peptide mass by final solvent volume to determine concentration. It can then convert that concentration to micrograms per milliliter, milligrams per milliliter, and the amount per 0.1 mL volume.
How much bacteriostatic water should be used?
The appropriate solvent volume depends on the desired research concentration and the material's validated compatibility information. For concentration math, solvent volume (mL) = peptide mass (mg) Γ 1,000 Γ· desired concentration (mcg/mL). This bacteriostatic water calculator does not determine whether BAC water is suitable for a particular material.
What is a reconstitution calculator used for?
Researchers use a reconstitution calculator to document concentration conversions and compare potential solvent volumes before preparing an RUO solution. It is a quantitative planning aid, not a substitute for product documentation or laboratory procedures.

