Free laboratory tool

Peptide Reconstitution Calculator

Calculate concentration from documented material mass and final volume, then preserve the result as part of a traceable research-use-only batch record.

No accountNo saved inputsNo dosing or administration guidance

Interactive worksheet

Concentration and aliquot math

Enter the documented vial mass and final solution volume. The optional aliquot field calculates material mass per laboratory aliquot.

Documented material mass(mg)Use the accepted batch record or supplier documentation as the source.Documented final volume(mL)Record final volume, not an assumed container capacity.Optional laboratory aliquot volume(µL)Optional. This is laboratory aliquot math, not a dose or administration calculation.

Calculated record

Concentration: 2.5 mg/mL
Equivalent concentration: 2.5 µg/µL
Material per laboratory aliquot: 250 µg

Formula: concentration (mg/mL) = documented mass (mg) ÷ documented final volume (mL). Preserve source values, units, rounding, reviewer, and method version in the batch record.

01 · Source

Use accepted record values

The calculator cannot verify fill mass, identity, purity, solvent compatibility, or final volume. Those values must come from the accepted lot record and validated method.

02 · Review

Check units and rounding

Preserve the source values, units, significant figures, calculation reviewer, and date. Do not overwrite the parent concentration when documenting a working dilution.

03 · Record

Keep the lot connected

Attach the result to the exact supplier lot, COA, solvent lot, prepared-material ID, method version, acceptance result, and storage record.

Research boundary

What this calculator does not do

This tool performs unit arithmetic only. It does not select a solvent, validate a protocol, establish sterility or stability, recommend a concentration, or provide dosing, injection, treatment, compounding, route, or personal-use instructions.

Use the laboratory's validated SOP and material-specific evidence. If a value is missing, unsupported, or inconsistent with the batch record, stop and resolve the discrepancy rather than calculating from an assumption.

Continue the record

Read the full RUO reconstitution guide

Connect the concentration calculation to COA review, solvent documentation, vial labelling, storage assumptions, acceptance criteria, and deviation handling.

Open the lab record guide