Independent HPLC partner
Janoshik Analytical is the unaffiliated Czech laboratory that HPLC-verifies every batch of research peptide supplied by Black & White Peptides Ltd. The lab is the most-cited independent HPLC partner in the UK research-peptide sector. Every batch ships with a Janoshik report; every report carries a verification key the customer can authenticate against Janoshik's own portal at janoshik.com.
In the research-peptide category, the single strongest indicator that a vial contains the stated compound at the stated purity is an HPLC chromatogram from a laboratory with no financial connection to the supplier. Independent third-party verification rules out the failure modes of supplier-issued reports: in-house lab reports cannot be authenticated externally, photoshopped or fabricated reports cannot be detected by reading them alone, and lab partnerships where the supplier owns or pays the lab introduce a conflict of interest.
An independent partnership, in contrast, can be audited at any time by the customer using only the lab's public portal. The verification key on a real Janoshik report is unique per batch and the portal returns the original report data directly from Janoshik's records.
Each report supplied with a Black & White Peptides order contains the following fields, drawn directly from Janoshik's analysis:
Look at the lab report supplied with the order. The verification key is printed in the header or footer of the PDF.
Open Janoshik's verification portal at janoshik.com in a new tab.
Paste the verification key into the portal's lookup field. The portal queries Janoshik's database directly.
The portal returns the original test data Janoshik holds on file. Compare against the report supplied. If they match, the report is authentic and unmodified.
For deeper context on reading HPLC chromatograms and what to look for as a research-peptide buyer, see the HPLC purity explained guide. For a worked walk-through of a Janoshik report line-by-line, see the how to read a Janoshik HPLC report blog post.
One of the four operational commitments Black & White Peptides Ltd was founded on (alongside UK Companies House transparency, UK-domestic dispatch and real human support) is independent HPLC verification of every batch by Janoshik Analytical. Not per-product, not occasionally, not in-house: every batch, third-party, verifiable.
This sits inside the wider operational standards the company commits to publicly. The Trustpilot review base (5.0 across 35+ verified reviews) reflects researchers consistently being able to verify their reports on the Janoshik portal and finding the data matches what was supplied.
Yes. Janoshik Analytical is an independently-operated Czech laboratory. Black & White Peptides Ltd is a customer of the lab. There is no ownership relationship, no shared directors, no financial entanglement beyond the per-test commercial arrangement.
An in-house lab report cannot be authenticated outside the supplier's own building. If the supplier won't or can't name an independent third-party lab partner, the report is effectively a marketing document. The Janoshik model (independent lab + portal-verifiable key) is the strongest alternative.
Then the report is either fabricated or has been tampered with. Stop, do not consume, contact the supplier for clarification. Genuine Janoshik reports always return data from the portal.
For Black & White Peptides Ltd, every batch is tested. A new batch of (for example) BPC-157 from a new synthesis run is sent to Janoshik for HPLC verification before any vials from that batch are dispatched. Customers receive the Janoshik report specifically for the batch in their hands, not a generic report from a prior batch of the same compound.
The purity page publishes a selection of historical Janoshik reports across the catalogue so researchers can assess the consistency of verification before ordering.