Research Peptide Storage Guide
Proper storage is critical for maintaining peptide integrity. This guide covers lyophilised powder storage, reconstitution with bacteriostatic water, temperature requirements, and best practices for researchers in India.
Lyophilised Powder Storage
Peptides are supplied as lyophilised (freeze-dried) powders in sterile, nitrogen-sealed vials. In this form, peptides are remarkably stable and can be stored at -20°C for 12-24 months without significant degradation.
Store vials in a dedicated freezer, away from light and moisture. Do not remove the vial cap until you are ready to reconstitute — exposure to moisture causes rapid degradation.
Reconstitution
Reconstitution is the process of dissolving the lyophilised powder in a solvent to create a working solution. Bacteriostatic water (0.9% benzyl alcohol) is the standard solvent for most research peptides.
Add the bacteriostatic water slowly down the side of the vial, not directly onto the powder. Gently swirl — do not shake — until fully dissolved. Shaking can denature the peptide.
RetraLabs bundles bacteriostatic water automatically with every peptide order for reconstitution convenience.
Post-Reconstitution Storage
Once reconstituted, peptides are significantly less stable. Store reconstituted solutions at 2-8°C (refrigerator) and use within the timeframe appropriate for your research protocol.
Avoid repeated freeze-thaw cycles. Each cycle degrades the peptide. If you need multiple aliquots, divide the reconstituted solution into separate vials before freezing.
Frequently Asked Questions
How long do lyophilised peptides last?
Lyophilised peptides stored at -20°C are typically stable for 12-24 months. Always check the COA for batch-specific guidance.
What temperature should peptides be stored at?
Lyophilised peptides: -20°C or below. Reconstituted peptides: 2-8°C (refrigerator). Avoid room temperature storage for extended periods.
Where can I buy bacteriostatic water in India?
Pharmaceutical-grade bacteriostatic water is available at RetraLabs and is automatically bundled with every peptide order.
Research Use Only — All products mentioned in this guide are supplied strictly for in-vitro laboratory research and analytical purposes. Not intended for human consumption.
