Estimate in vitro stability by peptide form, storage temperature, and pH level — with our interactive calculator built for UK researchers.
Peptide stability in research settings
Understanding how peptides degrade is fundamental to any serious research programme. Stability is influenced by temperature, pH, light, oxygen, and whether material is held as a sealed lyophilised solid versus a wet matrix prepared under your own institutional methods.
This guide explains storage-relevant factors that support the interactive calculator on this page. It does not provide mixing or reconstitution instructions.
Key factors that affect peptide stability
- Temperature. Refrigeration and freezing reduce kinetic activity, slowing many degradation pathways for sealed research materials.
- pH. Extreme acidity or alkalinity can accelerate hydrolysis at peptide bonds in aqueous environments used in laboratory work.
- Light and oxygen. UV exposure and oxidative stress — particularly for sequences containing methionine, cysteine, tryptophan, or tyrosine — can cause irreversible modification. Store sealed vials away from strong light.
- Dry vs wet matrices. Sealed lyophilised solids generally archive far longer than wet preparations. Once water contacts a peptide under laboratory preparation, stability windows shorten — follow your institutional SOP for any wet work.
Research tip: Use the calculator below to estimate a stability window for form, temperature, and pH. Results are generalised for research planning only. Not for human or veterinary use.
Using the calculator
Select peptide form, storage temperature, and pH range, then press "Calculate stability" to receive a recommended stability window. These estimates are based on general biochemical principles. All outputs are for research planning purposes only.
Related laboratory supplies
My UK Peptides also catalogues laboratory reagents such as bacteriostatic water. Browse the shop on myukpeptides.com. Research use only — we do not publish peptide mixing instructions.
Sealed Lyophilised Peptide Storage Estimator
For sealed lyophilised research materials only — not mixing guidance. Research use only.