Vial Purity & Actual Yield Analyzer
A 10mg vial doesn't always contain 10mg of active peptide. Use this tool alongside your vendor's Certificate of Analysis (COA) to calculate the precise mass of active compound before reconstitution.
Vial Purity & Actual Yield Analyzer
Calculate the true active peptide mass inside your vial based on third-party COA (Certificate of Analysis) testing data.
What the vendor sold it as (e.g., 10mg)
Purity percentage from lab test
Total powder weight from lab test
True Active Yield
10.05 mg
+0.05mg Overdosed
Excellent: This vial is generously dosed. You should input 10.05mg into reconstitution calculators to ensure you don't accidentally over-dose yourself.
Why COA Math is Critical for Research
Peptide synthesis inevitably results in impurities and the inclusion of counter-ions (like TFA or Acetate salts) which add physical weight to the powder in the vial. When a lab tests a vial, they measure two critical things:
- Purity (%): The percentage of the peptide structure that is exactly what it's supposed to be (free of truncations or synthesis errors).
- Net Content (mg): The total physical weight of the powder in the vial.
By multiplying these two numbers, you find the actual active yield. If your vendor sold you a "10mg" vial, but the COA shows 10.5mg net weight at 99% purity, your vial actually contains 10.39mg of active peptide. You must use 10.39mg in your reconstitution calculations, not 10mg.