Guide

Storage & Shelf Life

Proper storage for your research peptides — for maximum stability and potency.

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−20 °C

Long-term Storage

Powder (lyophilisate)
Up to 24 months

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2–8 °C

Refrigerator

Powder short-term
Reconstituted: 14–28 days

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≤ 25 °C

Room Temperature

Short periods only
Use within a few hours

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Avoid

Harmful to Peptides

Direct sunlight · Moisture
Repeated freeze-thaw

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Storage as Powder (Lyophilisate)

Unopened vials in their original state

Temperature: Ideally at −20 °C for long-term storage or 2–8 °C for short-term use.

Keep dry: Moisture is the greatest enemy of peptide powders. Keep original packaging sealed until use.

Light protection: Store vials in original packaging or opaque containers.

Tempering: Bring to room temperature before opening and wait for any condensation to clear — then pierce the stopper.

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After Reconstitution

Dissolved peptide in BAC Water

Always use BAC Water: Only sterile bacteriostatic water (0.9% benzyl alcohol) — no tap water or regular distilled water.

Refrigerate (2–8 °C): Reconstituted peptides must be refrigerated. Shelf life: typically 14–28 days.

Label the date: Write the reconstitution date on the vial to track shelf life.

Do not freeze: Freezing destroys the peptide structure. Reconstituted peptides must never be frozen.

Best Practices

6 Essential Storage Tips

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Use BAC Water

Sterile bacteriostatic water prevents bacterial growth and significantly extends shelf life after reconstitution.

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Disinfect the septum

Wipe the rubber septum with an alcohol swab before each withdrawal — prevents contamination during multiple uses.

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Maintain the cold chain

Temperature fluctuations dramatically reduce shelf life. The recommended temperature must be kept constant.

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Avoid light

Many peptides are light-sensitive and degrade from UV exposure. Store in dark containers or original packaging.

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Do not refreeze

Each freeze-thaw cycle damages the peptide structure. Freezing is only suitable for undissolved powder.

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Label with date

Write the reconstitution date on the vial. This helps track shelf life and batch order.

Frequently Asked Questions about Storage

Can I freeze peptide powder?

Yes — lyophilised peptide powder can be stored at −20 °C. Important: Wait for any condensation to clear after thawing before opening the vial.

How long are peptides stable after reconstitution?

Typically 14–28 days refrigerated (2–8 °C). This depends on the peptide type and the purity of the water used.

Which water to use for reconstitution?

Only sterile BAC Water (bacteriostatic water with 0.9% benzyl alcohol). No tap water, no regular distilled water.

Does light affect shelf life?

Yes — many peptides are light-sensitive and degrade from UV radiation. Always store in original packaging or opaque containers.

What happens if the cold chain is broken?

Brief interruptions (a few hours at room temperature) are tolerable. Prolonged heat or temperatures above 30 °C accelerate degradation significantly.

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Buy Accessories

BAC Water, syringes and alcohol swabs directly in the shop.

To accessories

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Still have questions?

Our team is happy to help with proper storage.