The standard is a document you can open.
A research compound is only as good as what you can verify about it. Every lot Royal Empire Supply ships is tested for purity, documented on its own certificate, sealed, and kept traceable by number — and nothing that can't clear that bar is allowed to leave. This page is the standard in full: what we measure, what gets printed, and how you confirm it yourself.
Four commitments, each backed by paper.
Not a slogan — the bar a batch clears before it's allowed to ship. Every line here maps to something you can read on the certificate or see on the vial.
Every compound is assayed by HPLC and the measured result is recorded for that specific lot. What you read is the value for the vial in your hand — not a target, not a marketing round-number.
Each batch carries a Certificate of Analysis: the compound, the lot number, the purity result, and the laboratory that signed it. If a statement lives on this site, there is paper you can open behind it.
The certificate is tied to the exact lot it describes, not a representative sample. The code on your vial maps to its own document — one batch, one record, verifiable by number.
Vials leave us sealed and tamper-evident. What we certify is what crosses your bench — nothing opened, decanted, or repackaged in between.
HPLC, in plain terms.
High-performance liquid chromatography pushes a dissolved sample through a column that separates it into its components. The main compound comes off as one peak; anything else shows up as its own. The area under that main peak, against the rest, is what the purity figure describes — a direct measurement of how much of the sample is the thing you ordered.
We run it per lot, not once per product, because a synthesis run is a physical thing — two batches of the same peptide are not automatically identical. Testing the batch you receive is the only way the number on the paper means anything about the vial in your hand. That measured value is what gets printed. We don't average across batches, and we don't quote a target in place of a result.
- A chromatogram for the specific lot
- The main peak — your compound, separated out
- A measured purity, read off that result
- The number, printed as found — no rounding to a claim
One batch, one record.
The COA is the document that carries the result. It isn't a stock certificate reused across the catalog — it's issued for a single lot and describes only that batch. Here's what it holds, and why each field is on it.
The material named and confirmed against its identity before the lot is cleared to ship.
The unique code stamped on the vial and repeated on the certificate — the key that ties document to batch.
The measured purity for that lot, reported as the assay found it rather than averaged across batches.
The lab that ran the analysis and stands behind the result, named on the face of the certificate.
When the lot was tested, so the record is anchored to the batch you actually receive.
Because the certificate is bound to the lot number, verifying it is a lookup, not a leap of faith. Read the code off your vial or packing slip, enter it on the Certificates page, and confirm you're holding what the paperwork says.
How a lot is documented.
Five steps, in order, every time — the certificate is created here, and never leaves the batch it belongs to.
The material arrives and is confirmed against its identity — the compound verified before anything else begins.
High-performance liquid chromatography separates the sample and measures purity for that specific lot. The chromatogram is the record; the percentage is the result.
The lot's Certificate of Analysis is issued — compound, lot number, purity, signing lab, and date — bound to that batch alone.
Vials are sealed and made tamper-evident, then matched to their certificate so the paperwork and the product never travel apart.
The lot code stays legible from our shelf to your slip, so any vial can be traced back to the document that describes it.
What we certify is what arrives.
A result only holds if the material stays what it was when it was tested. Sealing, stability, and traceability are how the batch reaches your bench unchanged — and provably so.
Every vial ships sealed. A broken or missing seal is meant to be obvious — the point is that you can tell, at a glance, that nothing was disturbed after certification.
Lyophilized peptides are shelf-stable for handling and transit — no cold chain required to reach you intact. On receipt, store per accepted laboratory practice and reconstitute only when your protocol calls for it.
The lot code on the vial matches the packing slip and the certificate. One batch, one document, one identifier — so provenance is a lookup, not a leap of faith.
What “research use only” means.
Everything Royal Empire Supply sells is intended solely for in-vitro studies and laboratory research by qualified professionals. These compounds are not drugs, foods, cosmetics, or dietary supplements. They are not sold for human or animal consumption, and nothing on this site is a therapeutic, diagnostic, or medical claim.
We keep that framing in the open, not the fine print, because it's the same discipline as everything else on this page: say plainly what the material is, document what can be documented, and claim nothing we can't stand behind.
Buy where the paperwork comes first.
HPLC-tested purity, a certificate on every lot, sealed and traceable by number. Confirm it before you order — the catalog and the lookup are both open.