Amino acids are supplied lyophilised (freeze-dried) because the dry state is far more stable than solution. But "stable" is not "indestructible" — heat, moisture, and repeated temperature cycling all degrade material over time, and a certificate issued at manufacture says nothing about what happened in transit.
Storage, in short
- Lyophilised powder is typically stored refrigerated at 2–8°C, protected from light and moisture.
- For long holds, colder storage slows degradation further; avoid repeated freeze–thaw of the sealed vial.
- Once reconstituted for a protocol, stability is much shorter and temperature-sensitive.
What we do
We store lyophilised product under controlled conditions and dispatch with handling guidance in every parcel. The goal is simple: the material you test should be in the condition its documentation describes.
On arrivalInspect the vial and packaging, confirm the lot number matches the COA, and store it correctly before use. Report damage or a temperature-compromised parcel promptly — see our Terms for the reporting window.
For research use only. Nothing here is guidance for human or veterinary use.