Provenance
Every harvest is independently tested at an accredited UK laboratory against ISO 3632:2011, the standard for saffron colour, taste, and aroma. The reference values are below.
Three Values, One Standard
ISO 3632:2011 sets a reference value for each of the three properties that define saffron quality. Category I is the highest grade saffron can earn, and every batch we sell meets it.
- Crocin 200 + ISO Category I reference
- Picrocrocin 70 + ISO Category I reference
- Safranal 20 to 50 ISO acceptable range
ISO 3632 Category I
| Property | Measured at | Category I reference |
|---|---|---|
| Crocin (colour) | 440nm | 200 minimum |
| Picrocrocin (taste) | 257nm | 70 minimum |
| Safranal (aroma) | 330nm | 20 to 50 |
| Moisture & volatile matter | Gravimetric | Below 8.5% |
| Floral waste | Visual | 0% |
| Foreign matter | Visual | 0% |
These are the ISO 3632:2011 Category I reference values. Every batch we sell is independently tested against them before it is packed.
Every Pack Carries a QR
Every batch is independently tested before it is packed, and its laboratory certificate is sealed to a unique QR code printed on the pack. Open your camera, point at the code, and the report for that exact batch opens in full. The proof, attached to the product, not buried on a website.
No middlemen, no anonymous mills, no “origin unknown” with nothing behind it. A fresh certificate and a fresh code for every harvest. The QR shown here is an example; tap it to see the kind of report a real pack reveals.
“If you can’t measure it, we won’t claim it.”Three Stigmas · Quality Standard