Research peptides ship as a dry powder and must be reconstituted before handling. Here's the standard step-by-step process, plus storage and shelf-life basics — written for laboratory reference only.
- Lyophilised peptides are reconstituted with bacteriostatic water (BAC water).
- Add the solvent slowly down the vial wall — never shake; swirl gently.
- Store reconstituted vials refrigerated, dated, and protected from light.
What “reconstitution” means
Research peptides are shipped lyophilised — freeze-dried into a stable powder. Reconstitution simply means dissolving that powder back into liquid using a sterile solvent so it can be measured and handled in the lab.
What you need
- Bacteriostatic water — sterile water with 0.9% benzyl alcohol, which lets a reconstituted vial keep longer than plain sterile water.
- An alcohol wipe for the vial stoppers.
- A sterile syringe for transferring the solvent.
Step by step
- Sanitise. Wipe the rubber stopper of both the peptide vial and the BAC-water vial with alcohol.
- Draw the solvent. Pull your chosen volume of bacteriostatic water into the syringe.
- Add slowly. Insert the needle at an angle and let the water run down the inside wall of the peptide vial — do not squirt it directly onto the powder.
- Dissolve gently. Swirl or roll the vial between your fingers. Never shake — agitation can damage the peptide.
- Rest. Let it sit a minute until the solution is completely clear.
- Label. Write the date and concentration on the vial.
Choosing a concentration
Concentration is simply the amount of peptide divided by the volume of water you add — more water means a more dilute solution. The exact figure is a decision for the qualified researcher and the protocol; this guide does not advise on quantities for use.
Storage & shelf life
Keep the lyophilised powder cool, dry and sealed until you are ready. Once reconstituted, store the vial in the refrigerator (2–8°C), away from light, and keep it dated. The benzyl alcohol in bacteriostatic water is what allows multi-day refrigerated storage — plain sterile or distilled water does not.
Bacteriostatic Water 10ml
Sterile BAC water for reconstitution — the standard solvent for lyophilised peptides.
Frequently asked questions
What water do you use to reconstitute peptides?
Bacteriostatic water (sterile water with 0.9% benzyl alcohol) is the standard solvent, because it allows the reconstituted vial to be stored for longer than plain sterile water.
Can you shake a peptide vial to mix it?
No — shaking can degrade the peptide. Add the water slowly down the vial wall and swirl gently until clear.
How should reconstituted peptides be stored?
Refrigerated at 2–8°C, away from light, and clearly dated. The lyophilised powder is stored cool, dry and sealed.
Do you sell bacteriostatic water in India?
Yes — we stock Bacteriostatic Water 10ml with COD across India.
⚠️ Research use only. All products referenced are supplied strictly as laboratory research chemicals / reference materials — not for human or veterinary use, not drugs, and not for diagnostic or therapeutic purposes. Nothing here is medical advice.