HPLC purity is one of the most common terms buyers see on peptide COAs. It is a documentation field that should be read together with the method label, criteria, and batch or lot number.
What HPLC indicates
HPLC is an analytical method label. On a COA, it often appears next to a purity percentage or chromatographic summary. The document format determines how much detail is provided.
What purity does not tell you by itself
A purity percentage is not a complete product record. Buyers should also review identity fields, batch or lot number, product name, SKU, acceptance criteria, and any notes listed by the supplier or testing laboratory.
How to read the field
- Check that the product name and SKU match the item.
- Check that the batch or lot number matches the request.
- Read the purity result with the method label.
- Look for acceptance criteria or specification limits.
Requesting missing records
If an HPLC purity record is not available on the product page, submit a documentation request with product and order details.