Walk into any grocery store that sells saffron and you will find packages using words like premium, authentic, Grade A+, pure, and superior. None of these words have a legal definition. None require testing. None mean anything beyond the marketing intent of whoever printed them.
ISO 3632 is different. It is an international standard developed by the International Organization for Standardization, formally published as ISO 3632-1:2011 (Specifications) and ISO 3632-2:2010 (Test Methods), that establishes measurable, testable criteria for saffron quality. It is the only quality framework in the global saffron trade that requires independent laboratory verification to claim.
What ISO 3632 Actually Measures
The standard measures three chemical compounds that are unique to genuine Crocus sativus saffron and directly responsible for its colour, flavour, and aroma.
Crocin is measured as the colour strength at 440nm absorbance. This tells you how much colour the saffron will release. Grade I requires a minimum of 190 per ISO 3632-1:2011. High-quality saffron regularly exceeds 250. Safflower and synthetic dyes produce an entirely different colour profile that does not meet this standard.
Picrocrocin is the flavour compound, measured at 257nm. This is what makes saffron taste bitter and earthy in the way that only saffron does. Grade I minimum is 70. A thread with no perceptible taste likely scores very low on picrocrocin.
Safranal is the aroma compound, measured at 330nm. The Grade I range is 20 to 50. This is the compound responsible for saffron's distinctive hay-and-honey fragrance. It is also the most volatile: saffron stored improperly or for too long loses its safranal first, which is why aroma is often the first quality indicator to degrade.
Source: ISO 3632-1:2011, International Organization for Standardization. iso.org/standard/44523.html
ISO 3632 does not measure how premium a brand's packaging looks. It measures what is actually in the thread.
The Three Grades
ISO 3632 defines three commercial categories: Grade I, Grade II, and Grade III, with Grade I representing the highest quality. Most commodity saffron sold globally falls into Grade II or Grade III. Grade I is what serious cooks, Persian households, and discerning buyers seek out, and it is what every jar of Azaad is verified to meet before it reaches you.
Why Batch-Specific Verification Matters
A general ISO 3632 certification on a package tells you that at some point, some saffron from that producer met the standard. It does not tell you that the specific threads in the jar you are holding were tested. Saffron quality varies by harvest year, storage conditions, and handling. A producer certified last year may be selling this year's inferior harvest under the same certification.
Batch-specific verification, where a laboratory analyses a sample from the precise shipment that was packaged, is the only way to know that the threads in your jar, specifically, meet Grade I. This is the standard Azaad is built around. Every batch, documented. Every jar, traceable.
How to Use This Information as a Buyer
When evaluating any saffron purchase, ask three questions. Does the packaging cite ISO 3632 Grade I specifically, not just "Grade A" or "premium" or "certified"? Is there a batch or lot number that allows traceability? And is there a way to see the laboratory findings for that specific batch: a QR code, a certificate, a verification page?
If all three answers are yes, you have a product worth buying. If any of them is no, you are taking the seller's word for something that should be verifiable.