Storage and reconstitution

On arrival

Move lyophilized material to freezer storage at −4 °F, protected from light, on the day it arrives. Material that has been at ambient temperature in transit for the shipping interval is within specification; material left at ambient temperature after delivery is not.

The window in the label

Every label leaves about 3/8 in of bare glass on the side opposite the seam. That window is a specification, not a leftover: it exists so the contents can be seen without opening the vial. A full wraparound label would hide them, which is why we do not print one.

A cake that has cracked, broken into pieces or come loose from the glass is not a defect. That happens in transit, the cake being fragile: the material is the same and the amount is unchanged. The condition of the cake is not a reason for a refund or a replacement; a damaged vial is. See the refund and replacement policy.

Reconstitution

Allow the vial to reach room temperature before breaking the vacuum seal, so atmospheric moisture does not condense onto cold material. Dry is the state the vial ships in; it is not a property the material keeps once the seal is broken in a humid room.

Once reconstituted, stability holds for about four weeks at 39 °F in a refrigerator. Aliquot rather than freeze-thawing the same vial repeatedly.

To work out the concentration a vial makes in a given volume of solvent, in mg/mL or in molar units, use the peptide reconstitution calculator. Molecular weights are on the peptide reference chart.

Research use

Supplied as reference reagents for laboratory research use. Not for human or veterinary use, and not for diagnostic or therapeutic application. The full statement is on the research-use page.