Is ROK Chem legit? An independent review
ROK Chem ⚠ Sells a raw research-grade GHK-Cu peptide powder alongside skincare, states "developed, formulated and produced in the UK," free UK shipping. Only a bare "99.9% purity" claim, no CoA or testing lab named. Independently confirmed on Companies House: the disclosed entity "ROK CHEMICAL SUPPLIES LIMITED" (13782325) was Dissolved on 28 July 2026, yet the storefront is live and still taking orders as of 6 September 2026: a registered-company-dissolved-but-still-trading pattern, a higher-risk signal than a simple thin-evidence watch listing.
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Verified facts at a glance
| Fact | What we found | How it was checked |
|---|---|---|
| Certificate | nothing we could verify in this seller's own name, details below | read on the seller's own site |
| Domain registered | Dec 2021 · 4.8 years old | the domain registry's public record |
- A certificate that verifies in this seller's own name on an independent laboratory's website
- Any certificate from a named independent laboratory on the pages we audited
Is ROK Chem legit? The questions people ask
Is ROK Chem legit?
ROK Chem (rokchem.co.uk) is on The Peptide Watch's watch list. It does not publish a certificate of analysis that can be independently verified in its own name, so its quality claims rest on trust rather than checkable evidence. That is not proof of a scam; it means the evidence does not check out.
Does ROK Chem publish a real, verifiable Certificate of Analysis?
Not one that can be independently verified in its own name. ⚠ Sells a raw research-grade GHK-Cu peptide powder alongside skincare, states "developed, formulated and produced in the UK," free UK shipping. Only a bare "99.9% purity" claim, no CoA or testing lab named.
How do I check ROK Chem's certificate myself?
Find the certificate on rokchem.co.uk and read four things: an independent laboratory is named; the client field names ROK Chem, not a supplier; the compound line names the peptide you are buying, not only a batch code; and the report opens on the laboratory's own website from its task number and key (verify.janoshik.com for Janoshik). Then compare the batch number on the report with the one on your vial. The free COA Checker on this site runs the first three checks on a photo of the certificate.
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How every seller is judged: methodology. This audit as data: /data/vendor/rokchem-co-uk.json, re-checked daily. All 41 sellers whose certificate can be checked: the verified list.