Handling · 5 min
Reconstitution and storage, in a research context
Research peptides are commonly supplied as a lyophilised (freeze-dried) powder. Before they can be used in laboratory work they are reconstituted — dissolved in a suitable sterile solvent such as bacteriostatic water.
Technique matters. A peptide is a delicate molecule, and rough handling can degrade it. The goal is to dissolve the powder gently and completely, without foaming or mechanical stress. The water is added slowly down the inner wall of the vial rather than splashed onto the powder, and the vial is swirled or rolled — never shaken.
The steps below describe standard laboratory reconstitution handling. They are not a protocol for use, and nothing here is a dosing or medical instruction. After reconstitution, the solution is kept refrigerated and used within the working window defined by your protocol. Always follow your institution’s safety standards.
The steps
Bring to room temperature
Let the lyophilised vial and the bacteriostatic water reach room temperature before you begin.
Add solvent down the wall
Tilt the vial and let the bacteriostatic water run slowly down the inner glass wall — aim at the glass, never directly onto the powder.
Swirl gently — never shake
Roll or swirl the vial gently in a circle until it dissolves. Do not shake: shaking foams and stresses the peptide.
Rest until clear
Leave it undisturbed until the solution is completely clear, then store it refrigerated.
Concentration calculator
Reconstitution math for research reference only — not dosing guidance.
| Water added | Concentration |
|---|---|
| 1 mL | 10.00 mg/mL |
| 2 mL | 5.00 mg/mL |
| 3 mL | 3.33 mg/mL |
| 5 mL | 2.00 mg/mL |
For research use only. Reconstitution describes laboratory handling of the material and is not preparation for human or animal use.
For research use only. This article is educational and is not usage, dosing, or medical guidance.