Handling & Storage

Storage: Lyophilized (Powder)

Before reconstitution, peptides exist in a freeze-dried (lyophilized) state. In this form, they are relatively stable but still sensitive to extreme heat, moisture, and light over prolonged periods.

3-6 Months

Room Temperature

Most lyophilized peptides can survive at room temperature in a dark environment for several weeks or months, though it is not recommended for long-term storage.

1-2 Years

Refrigerated (2°C to 8°C)

The standard recommendation for storing unmixed vials. Keeps compounds stable and prevents degradation.

Bacteriostatic Water (BAC)

Bacteriostatic water is sterile water containing 0.9% benzyl alcohol, which prevents the growth of bacteria. It is the universally recommended diluent for multiple-use peptide vials.

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The 28-Day Rule: Officially, BAC water expires 28 days after the vial is first punctured. In reality, researchers often use it for 6-8 weeks if kept refrigerated and handled with sterile techniques, but you do so at your own risk.
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Sterile Water vs BAC: Sterile water contains no preservative. If you use sterile water, the reconstituted peptide must be used immediately or discarded, as bacteria will begin multiplying rapidly.

Storage: Reconstituted (Liquid)

Once mixed with bacteriostatic water, the peptide structure becomes more susceptible to degradation. Proper handling is critical.

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Always refrigerate reconstituted peptides between 2°C and 8°C. Do not freeze once mixed, as ice crystals can destroy the peptide chains.
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Protect from light: UV light degrades peptide bonds. Store in a dark container, a specialized case, or keep the vial inside a drawer or box in the refrigerator.

The "Fragility" Myth

Myth: "If you drop a reconstituted vial, or spray BAC water directly onto the powder instead of trickling it down the glass, you will instantly shatter the peptide bonds."

While peptide chains are indeed more fragile than basic chemical compounds, they are not fragile like glass. They survive the violent agitation of shipping, turbulent transport, and high-pressure manufacturing.

Reality: You should handle them with respect—rolling the vial gently between your palms to mix rather than violently shaking it like a protein shaker. However, accidentally dropping a vial on the carpet or pushing water directly into the puck will rarely compromise the efficacy of standard research peptides.

Travel Protocols

Traveling with peptides is common. The primary goal is maintaining temperature control for reconstituted vials.

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TSA and Flying: Peptides, insulin syringes, and cooler packs are fully permitted in carry-on luggage for medical purposes. Always declare them if asked, and ideally carry a prescription if applicable. Do not put them in checked luggage due to unpredictable temperature extremes in the cargo hold.
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Cooling Solutions: Use an insulin travel cooler (like a Frio pouch or a hard-shell medical cooler with a gel pack). Once you reach your destination, transfer the vials to a mini-fridge immediately.