VERIFICATION
Every lot proves itself.
You should never have to take a purity claim on faith. Every batch we sell is tested by an independent lab, tied to a signed report, and printed on the vial you hold. Verify before you open it.
99.3%
Average lot purity
4
Lots verified and shipping
THE FOUR QUESTIONS
What a COA actually answers.
A certificate of analysis is a lab document that answers four plain questions about the vial in front of you. A logo on a label answers none of them. If a report skips one of the four, it is holding something back.
Question 01
Identity
Is this the compound on the label. Mass spectrometry confirms the molecular weight matches the target peptide, so you know what is in the vial before anything else.
Question 02
Purity
What percentage is the target peptide. HPLC separates the sample and measures the target peak against everything else. This is the purity figure researchers read first.
Question 03
Content
How much active material is in the vial. Content confirms the labeled amount is really there, so the milligrams you record in your research match the milligrams you received.
Question 04
Contaminants
What else is present. The chromatogram shows related peaks and impurities alongside the target, so nothing hides in the gap between a claim and the actual sample.
CHAIN OF CUSTODY
From synthesis lot to your bench.
One unbroken line runs from the batch that was made to the vial in your hand. Every step is traceable, and the last step belongs to you.
Synthesis lot
A single production lot is made and assigned its own batch number. Everything downstream is tied to that number, not to a brand-wide average.
Independent Finnrick testing
A sample from that lot is sent to Finnrick, an independent lab, and run by HPLC and LC-MS. We do not grade our own product, and we do not accept the supplier's word for it.
Signed lot-specific COA published
The result becomes a certificate of analysis carrying that lot number, its purity, and its identity confirmation. The report is on file and available to match against your vial.
Vial printed and coded
The vial ships with a printed label: product, strength, lot number, and expiry, plus a QR code. The lot on the glass is the same lot on the report.
You verify before you open it
Scan the code, read the lot, pull the report. The chain closes in your hands, not ours. If you want to run your own test, the guarantee below has you covered.
TRACEABILITY
One COA per lot, always.
Reusing a single lab report across many different batches is the oldest trick in this category. The report looks real because it is real. It just does not describe the vial you were sent.
We publish a report for each lot. The number printed on your vial ties back to that lot's own Finnrick result, not a stand-in from a different production run.
That is what makes the purity figure mean something. A number is only proof when it belongs to the exact batch in your hand.
HOW TO MATCH IT
-
1
Read the lot number printed on your vial label.
-
2
Scan the QR code, or open the lab report library.
-
3
Confirm the lot on the report matches the lot on the glass, then read the purity and identity lines.
FAQ
Straight answers.
Who is Finnrick?+
Finnrick is the research community's independent grading body for commercial peptide vendors. Samples are purchased blind, run by HPLC, and scored on purity, quantity accuracy, and batch identification. NLL does not run its own numbers. Every grade you see comes from Finnrick, not from us and not from the supplier. That independence is the entire point. A grade only counts when the party giving it has nothing to gain.
What is HPLC?+
High-performance liquid chromatography. The sample is pushed through a column that separates it into its parts, and a detector measures each part as a peak on a chromatogram. The size of the target peak against everything else is the purity percentage. It is the standard analytical method for confirming what a peptide is and how pure it is, which is why it sits at the center of every serious COA.
How do I read a COA?+
Start with the four questions. Identity: is this the compound on the label. Purity: what percentage is the target peptide. Content: how much active material is in the vial. Contaminants: what else is present. Then match the lot number on the report to the lot printed on your vial, and read the purity figure next to the identity confirmation. If the lot numbers do not match, the report is describing a different batch.
What if my lot is not listed?+
Email [email protected] with your order number and the lot number printed on the vial. We match the report to your exact lot and send it back, usually within one business day. Reports are tied to the lot you received, never a recycled one from a different batch, so there is always a real document behind your specific vial.
All NLL products are sold for in vitro research use only. Not for human consumption. The presence of a COA does not constitute an endorsement of human use. Not evaluated by the FDA. Customers must be 21+.