Trust through data
A purity number is only worth the document behind it. Every lot is tested before it is listed, ships with its own Certificate of Analysis, and stays checkable — per lot, before you buy and after it arrives.
Each size carries its own batch, and each batch is tested on its own. A new lot means a new test and a new COA; results are never carried over from the lot before it.
A Certificate of Analysis has to be on file before a product can go live — the catalog will refuse to publish it otherwise. It's a rule the system enforces, not one we have to remember.
Purity is measured by HPLC, with mass spectrometry in addition where a lot's methods say so. We publish the figure and the method it came from, side by side, per lot.
Open any product and the lot currently selling shows its:
Products with more than one lot on record also show a batch-history panel — so you can watch purity hold across lots over time, instead of taking a single flattering number on faith.
Every order document carries a QR code pointing at a public verification page for that exact order. Scan it to confirm the order is genuine and to open the Certificate of Analysis for every lot inside it — no account, no login.
The link uses a random, non-guessable token — never your order number or payment reference — and the page it opens carries no personal data.