Laboratory standard
Six checks every batch goes through before a vial is shipped.
A peptide is only as reliable as the data that comes with it. That is why, for every batch, we record what was measured, by whom, and when.
The six checks for each batch
Batch registration
Every production batch gets its own number. That number appears on the label of every vial and on the certificate.
Purity by HPLC
An external laboratory measures purity by liquid chromatography. A batch is released at a purity of ≥99%.
Identity by mass spectrometry
The measured molecular mass is compared with the theoretical mass of the compound.
Content per vial
The amount of material per vial is checked against the value on the label.
COA published
The certificate of analysis is published as a PDF with the product and can be found by batch number.
Storage and shipping
Lyophilized material is stored cool and dark and shipped in insulated packaging.
What this lets you do
Use the batch number on the label to look up the matching certificate of analysis on the Lab results page. This lets you record in your own lab notebook which starting material was used for an experiment. Anyone who wants to repeat a measurement knows which batch is needed, or can compare a new batch against it.
What a certificate does not tell you
A purity of ≥99% refers to the composition of the peptide, not to the amount in the vial and not to sterility. If a particular application calls for additional data, such as an endotoxin test, ask in advance whether that data is available for the batch.
Independently tested
The analyses are carried out by an external laboratory, separate from production. The name of the laboratory and the date of the measurement appear on every certificate.