Obsidian Labs

Reconstitution Calculator

A laboratory tool for calculating peptide concentration and research aliquot volumes after reconstitution. For educational and research purposes only.

For Research Use Only. This calculator is intended solely for laboratory and scientific research calculations. It does not constitute medical advice, dosing guidance, or instructions for human or animal use. Always verify calculations independently.

01 Peptide Vial Content

Enter the total peptide content of the lyophilized vial as printed on the label (for example, a 10 mg vial = enter 10).

Peptide Amount Value on the vial label

02 Bacteriostatic Water Volume

Enter the volume of bacteriostatic water you will use to reconstitute the vial. Larger volumes produce a lower concentration. You may enter a custom value or select a common volume below.

BAC Water Volume Total water added to the vial

Common Volumes

Most lyophilized peptide vials are designed to hold up to 3 ml of bacteriostatic water. The volume chosen determines final concentration. Select a value below to auto-fill, or enter a custom amount above. If transferring into a larger vial, enter the total water volume used.

03 Desired Research Quantity

Enter the target quantity of peptide required for your research aliquot. Toggle between mg and mcg as needed. Calculations use a standard U-100 scale (100 units = 1 ml) for volume reference.

Target Quantity Amount needed for research

Calculation Results

— Concentration per unit

— Volume on U-100 scale

— Approx. aliquots from vial

Summary

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Volume Reference (U-100 Scale)

Equivalent volume: — units on a standard U-100 scale

Research Quantity Reference Table

Quantity (mg)	Quantity (mcg)	Units (U-100)	Volume (ml)