Read the paperwork first.
Every Viper batch reference is printed on the product label. Enter it below to find any documentation published against that batch, including the methods, results and supporting records available.
Verify a batch
Enter the reference exactly as shown on your Viper label.
No account or order number required.
Verification chain
Match the batch
Check that the reference on the documentation matches the Viper batch printed on your label.
Read the result
Review the methods, reported results and scope of the analysis published for that batch.
Verify the source
Where third-party verification is available, follow the laboratory reference to confirm the original record.
What the laboratory actually ran
A purity figure means nothing without the method that produced it. These are the analyses our reports carry, and what each one can and cannot tell you.
- HPLC: purity analysis
- High-Performance Liquid Chromatography (HPLC) is commonly used to assess peptide purity. Where a batch has been independently analysed, the reported result is published against that specific batch. Material that falls below our acceptance specification is removed from saleable stock and written off.
- The report behind the result
- Published Viper documentation reflects the methods and figures reported for the relevant batch. Where additional analysis, such as mass confirmation, is available, it is shown separately rather than implied by a purity result.
Learn to read one
A certificate is only evidence to somebody who can read it. These walk through the parts that matter.
- How to read a peptide CoAReview batch identity, HPLC purity, LC-MS confirmation, and the limits of certificate records.
- Peptide storage guideConnect certificate records with storage logs, temperature control, and handling documentation.
- Calculator formula guideUnderstand concentration, draw volume, and U-100 unit references used by the research calculator.
- Batch numbers and traceabilityHow a batch identifier links material to the analysis describing it, and where that chain breaks.
- CoA, SDS and specificationWhat a certificate is evidence of, and which questions the other two documents answer instead.
- How to read an HPLC chromatogramReading the separation behind a reported purity figure, and what a single large peak does not prove.
Common batch questions
How do I check a batch?
Type the number from your vial label into the box above. They take one of two shapes, SKU-YYMM or SKU-DDMMYY, so enter it exactly as printed. No number on your label? The product page for that variant lists the latest batch we hold.
How old are the results?
Where testing has been commissioned it is arranged when the stock lands, and the sampling date is printed on the report. Age matters less than storage: a compound kept as its label says will outlast one left on a bench.
Whose reference will the report carry?
Not always. We keep internal stock references, and some published reports are supplier-level analyses. A laboratory works to the sample reference it was given, so a document can name the supplier’s batch rather than our stock code. What is published is the testing information that exists for that product or batch.
Can’t find your batch?
Check the reference against the label once more. If it still does not return a result, send us the batch number and, if relevant, your order number. We can confirm what documentation is currently available for it.
Got a batch? Check the paperwork.
Use the reference printed on your Viper label to find the documentation published against it.