Peptide Storage Guide

1. Storage Conditions by Product Form

Form	Temperature	Humidity	Light	Duration
Lyophilized (unopened)	-20°C	Desiccated	Protected	24–36 months
Lyophilized (opened)	-20°C	≤30% RH	Protected	Use within 6 months
Reconstituted (frozen)	-20°C	—	Protected	Up to 6 months
Reconstituted (refrigerated)	2–8°C	—	Protected	Up to 30 days

2. Storage Equipment Recommendations

Equipment	Specification	Purpose
Freezer	-20°C ± 3°C, no auto-defrost cycle	Prevents temperature cycling
Desiccator	Silica gel or molecular sieve	Maintains low humidity
Foil wrap	Aluminum foil	Light protection
Cryogenic box	-20°C rated plastic with dividers	Organized storage

3. Stability Monitoring Checklist

• [ ] Record storage temperature daily
• [ ] Check desiccant indicator monthly (replace when saturated)
• [ ] Monitor freezer for defrost cycles
• [ ] Document power outages or temperature excursions
• [ ] Verify expiry dates before use
• [ ] Inspect vial integrity before opening

4. Temperature Excursion Protocol

Excursion	Duration	Action
-20°C to 2–8°C	< 24 h	Return to -20°C; note in records
-20°C to 2–8°C	> 24 h	Retest by HPLC before use
-20°C to room temp	< 1 h	Return to -20°C; note in records
-20°C to room temp	> 1 h	Discard or retest before use

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For storage inquiries: [email protected]