ISO, a federation of national standards bodies, sets the saffron classification standards. ISO 3632 exclusively deals with saffron and sets up 4 grades of color intensity such as IV (lowest), III, II and I (purest and finest saffron quality).
Saffron Classification gauges the level of 440-nm light absorbency by using samples of dray saffron. High absorbencies mean that there is a high concentration of crocin and high intensity of color. These variables are gauged through spectro-photometer details at testing laboratories around the world.
The major saffron producing countries have various Saffron names and classification. Here are some of the most common commercial results and names in saffron producing countries:
- Persian Saffron: result 2000/2001 = 160 ton | Classification: 1-Sargol (All-Red), 2-Dasteh, 3-pushal
- Spanish Saffron: Classification base on coloring strength | Classification: 1-Cupe, 2-Mancha, 3- Rio, 4- Sierra
- Greece Saffron: Commercial name : Red Saffron
- Indian Saffron: Commercial name : Mongra, Lacha