Storage & Stability

Peptide Basics

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Temperature, light, and oxygen are the three main enemies of peptide stability. Proper storage preserves activity and extends the usable life of your research peptides.

Temperature Stability Spectrum

Deep Freeze

-80°C to -20°C

Refrigerator

2°C to 8°C

Room Temp

15°C to 25°C

Avoid

> 25°C

Ideal for lyophilized peptide powder you won’t use for months. Minimises degradation to near-zero. Avoid freeze-thaw cycles — aliquot powder into single-use portions before freezing.

✅ DO

Lyophilized powder, long-term archival
Aliquot powder into single-use vials
Use vacuum-sealed or nitrogen-purged container

❌ DON'T

✕Reconstituted solutions
✕Repeated freeze/thaw cycles
✕Non-lyophilized forms

Standard storage for reconstituted peptides in active use. BAC water-reconstituted peptides stable 4–8 weeks. Keep at the back of the fridge where temperature is most consistent.

✅ DO

Reconstituted peptides currently in use
Lyophilized powder for weeks-to-months
Protect from light — foil wrap or opaque container

❌ DON'T

✕Near the door (temperature fluctuates)
✕In produce drawers (excess humidity)
✕After 8 weeks reconstituted

Typical Stability Timeline

Condition	Form	Typical Duration	Notes
-20°C freezer	Lyophilized powder	2+ years	Ideal long-term; avoid repeated freeze/thaw
-80°C freezer	Lyophilized powder	5+ years	Research-grade archival
2–8°C fridge	Lyophilized powder	6–12 months	Working stock
2–8°C fridge	Reconstituted (BAC)	4–8 weeks	BAC water preservative extends stability
2–8°C fridge	Reconstituted (sterile)	24 hours	Single-use; discard remainder
Room temp	Reconstituted	Hours only	Transport only

Reconstitution

Purity Testing

Educational Content Only. All Peptide Basics content is for research and educational purposes only. Nothing constitutes medical advice or instructions for human use.

Storage & Stability

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