Peptide Concentration & Volume Calculator
Compute concentration (mg/mL), required volume (mL), and U‑100 unit‑scale equivalents for research preparations. Includes forward calculations, reverse calculations, and multi‑peptide blend ratio calculations.
Mass to Units Calculator
Converts a specified mass-per-aliquot target into U‑100 unit‑scale equivalents.
Diluent Types for Reconstitution
A practical breakdown of common diluent types referenced for peptide reconstitution.
Bacteriostatic Water (BAC)
Sterile water with a preservative (commonly benzyl alcohol) designed for multi‑access preparations. Helps slow bacterial growth after the vial has been punctured multiple times.
- Multi‑target mass vials accessed repeatedly
- Convenience + reduced contamination risk
Sterile Water
Sterile water without preservative. Meant for single‑access situations. Once opened or punctured, it has no preservative help against contamination.
- Single‑access preparation where the solution won’t be stored long
- Cases where preservatives are specifically avoided
Non‑sterile water
Not sterile. Even “clean” tap water can contain microorganisms, minerals, and impurities that can ruin the solution and increase contamination risk.
- Risk of contamination/infection
- Unpredictable minerals/chemicals that can destabilize peptides
Quick Guide (Research Math)
Plain‑language definitions of inputs and outputs (research math only).
Mass Input
Specify the target mass amount. Many peptide values are expressed in micrograms (mcg), while higher values may be expressed in milligrams (mg). The unit toggle changes the input unit.
Total Mass in Vial
Represents total peptide powder content in the vial, typically labeled in milligrams (mg). Common strengths include 5 mg, 10 mg, and 15 mg.
Diluent Volume (mL)
Represents the bacteriostatic water (BAC water) volume applied for reconstitution. Higher volumes produce lower concentrations; lower volumes produce higher concentrations.
Outputs (What the calculator reports)
Outputs (What the calculator reports) include concentration (mg/mL), volume (mL), unit‑scale equivalents (assuming 100 units = 1 mL), and an estimated target mass count per vial.