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Top grade saffron possesses a deep red color and is dry to the touch.
We grade Saffron via laboratory measurement for color (crocin), flavor (picrocrocin) and aroma (safranal) content. For instance samples will get grade by gauging the saffron's color content. The higher color content signifies a greater color concentration and intensity.
In conclusion the ISO classifies saffron into four grades of Coloring Strength. Category IV is the lowest quality followed by Category III, Category II and then Category I (highest quality). Similarly the coloring strength grades range from lower than <99 (applies to all Category IV saffron), 100-149 (for Category III), 150-189 (for Category II) and 190 or greater (for Category I).
HPTA Trading supplies Saffron with the highest quality standard which is Category I (DIN ISO 3632-2). In addition we can provide BRC or IFS certificate.