Reconstitution Basics for Lyophilized Peptides

Lyophilized (freeze-dried) peptides arrive as a stable powder. Reconstitution is the process of dissolving that powder into solution for use in a research model.

The standard diluent is bacteriostatic water, which contains 0.9% benzyl alcohol to inhibit microbial growth across repeated draws. Sterile or sodium-chloride water can be used for single-use work but lacks the preservative.

Choosing a reconstitution volume is a concentration decision, not a fixed rule. A common approach is to add a volume that makes the math clean — for example, 2 mL of bacteriostatic water into a 10 mg vial yields 5 mg/mL.

Add diluent slowly down the side of the vial rather than directly onto the powder, and let it dissolve without vigorous shaking. Once reconstituted, store refrigerated and protected from light.

This article describes general laboratory handling only. All VeriPeptides products are sold for research use and are not for human consumption.