Specification: 10:1, 20:1, 5%~20% Flavones Appearance: Brown yellow fine powder Test method: UV Loss on drying: ≤5.0% Ash: ≤5.0% esh size: 80 mesh Heavy metal: ≤10ppm Microbiology: Meet standard Grade available: Food grade, cosmetic grade Packing: 25kg drum Shelf life: 24 months under proper storage