Overview
ISO 3632 gives saffron buyers a shared reference for product specifications and test methods. A useful testing brief identifies the edition, product form, lot or sample, required parameters and acceptance criteria. Simply asking for “ISO-tested saffron” leaves too much of the purchase undefined.
Which ISO 3632 editions apply?
As checked on 14 November 2026, ISO lists ISO 3632-1:2025 as the published saffron specification, replacing the 2011 edition. ISO 3632-2:2010 remains the published test-method standard. Both cover saffron forms relevant to commercial buying. Part 1: specification, Part 2: test methods.
Put the complete reference in the purchase specification. If a supplier sends an older report, ask which edition was used and whether the laboratory can assess the lot against your current requirements. A document's age and a product's harvest date are separate facts; record both.
What do the main measurements describe?
Agilent's application note demonstrates UV-Vis saffron assessment using the 2025 specification and 2010 methods. It discusses moisture and volatile matter and measurements associated with colour, bitterness and aroma. Those measurements need the stated method and reporting basis to be interpreted correctly. Agilent's saffron testing application note.
| Report area | Buyer question |
|---|---|
| Colour-related measurement | Does the reported result meet the agreed product specification? |
| Taste- and aroma-related measurements | Which method and reporting basis were used? |
| Moisture and volatile matter | Is the result expressed on the required basis for this product form? |
| Physical characteristics | Which checks were included in this particular analysis? |
| Classification | Which edition and criteria support the laboratory's stated class? |
Avoid comparing isolated numbers copied from different reports. Check the units, sample preparation, calculation basis and method first. A larger number is not automatically preferable for every characteristic.
Turn a laboratory request into a complete brief
Give the laboratory the product name, form, sample quantity, lot reference and destination market. Attach the specification that your purchasing team intends to use. Ask it to confirm sample requirements before material is dispatched, including any separate portions needed for different analyses.
Agree the report format and the person responsible for reviewing the result. If the laboratory is being asked to state conformity with a limit, discuss how it makes that decision, including the treatment of measurement uncertainty where relevant. The receiving team should be able to tell which result controls acceptance.
Add checks that serve the actual purchase
A saffron quality classification and a complete destination-market testing programme are different scopes of work. Ask your quality team to identify any additional authenticity, microbiological, residue or elemental checks required by the buyer and destination. Have the laboratory confirm the appropriate methods for those questions.
For example, a request to compare colour characteristics is different from a request to investigate a suspected added dye. State the concern directly so the analytical work addresses it. Our authenticity guide explains why a visual or kitchen test cannot answer every purchasing question.
Match the tested sample to the shipment
Record who took the sample, which lot it came from, how it was sealed and when it reached the laboratory. Keep the laboratory sample identifier with the supplier's lot reference. If one shipment contains several lots, decide how each will be sampled and approved rather than attaching one unrelated report to every carton.
Retain the agreed sample and approval record for your own receiving comparison. Any change in the supplied lot should trigger a review of whether the existing evidence still applies.
Build testing into the order schedule
Plan time for sample dispatch, analysis, review and any questions before the intended shipment date. Confirm who commissions the work, who receives the report and which costs are included in the quotation. This prevents the quality decision becoming an unexpected task after packing is complete.
CleanSaffron coordinates independent laboratory testing alongside sourcing and samples. Send your specification with the grade, quantity and destination so the testing plan can be included in the wholesale brief.