The Saffron
Laboratory tested according to ISO 3632.
What the laboratory measures, what the numbers mean, and what a real lab sheet shows.

Why coloring strength matters
ISO 3632 gives three numbers: colour (crocin), taste (picrocrocin) and aroma (safranal). Coloring strength matters most: the higher it is, the fewer threads you need for the same colour.
How it is tested
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In two countries
Every shipment is tested in a certified laboratory, in Afghanistan and in the EU.
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Three measures
Colour (crocin), flavour (picrocrocin) and aroma (safranal), on the same sample, according to ISO 3632.
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Batch by batch
Crocin target: Premium 245–270+, Royal 270–300+. Actual laboratory results may differ depending on where and how the sample is tested (Afghanistan or the EU).
Batch result · 2026
The lab sheet of our latest shipment
The result of the Herat saffron quality control laboratory for our latest shipment to Hungary, according to ISO 3632. Every measured value in category I, with no artificial colourants.
- Crocin (colour)
- 295.2Category I: at least 200
- Picrocrocin (flavour)
- 111.5Category I: at least 70
- Safranal (aroma)
- 32.7Category I: 20–50
- Moisture
- 7.9%Category I: at most 10%
The result applies to this batch. Actual laboratory results are batch-specific; we publish the lab sheets of new batches here, and earlier ones are on the Explore page.
All about saffron
- Benefits Colour, aroma and flavour
- How to use Three steps and kitchen tips
- How much should I use? Amounts, dish by dish
- How should I store it? Keep its colour and aroma
- Quality & Laboratory ISO 3632 and a real lab sheet
- Negin & Super Negin The selection grades
- FAQ Shipping, gifts, origin and more
- Shop Premium and Royal, 1–30 g
Coloring strength to ISO 3632 (crocin absorbance), category targets: Premium 245–270+, Royal 270–300+. Actual laboratory results may differ depending on where and how the sample is tested (Afghanistan or the EU). Premium and Royal are AMU selections, not official ISO grades; grade I starts at 200. Saffron is a spice; this site makes no health claims.