About Peptides

Every peptide BioLifeLab ships arrives lyophilized — freeze-dried to a powder. It is worth understanding why, because it explains most of the handling advice that follows.

1. Peptide synthesis

• Produced by solid-phase peptide synthesis (SPPS) or liquid-phase synthesis.
• Purified by HPLC and verified before release.

2. Preparation for lyophilization

• The purified peptide is dissolved in water or dilute acetic acid.
• The solution is filtered to remove particulates.

3. Freezing

• The solution is frozen below −40 °C, locking the peptide in a solid matrix.

4. Primary drying (sublimation)

• Under vacuum, the ice passes straight from solid to vapour without melting.
• This is the step that protects the peptide from the degradation a liquid phase would allow.

5. Secondary drying (desorption)

• Residual bound moisture is driven off until the powder is below 1–2% water content.

6. Sealing and storage

• Vials are sealed under nitrogen and held at low temperature.
• In this state the peptide is stable for extended periods; once reconstituted, it is not.

For laboratory research use only. Not for human or veterinary use. These products are not FDA approved medications and are not intended to diagnose, treat, cure, or prevent any disease.