Bubble
Take three two red flowers, immersed in water, it can be seen that orange yellow is decreased, and the water is dyed into yellow, but the flowers do not fade. Although the flowers are red, the water is bright and yellow. Moreover, there should be a powder-shaped precipitate, and there is a precipitate to be doped.
In addition, the water is bubble, if the flowers in a short period of time become brown or white or other colors, or be shattered, that is also fake, the flower should be bright red and not fade, not broken.
Smell
Authentic red flowers have a very rich flowers, very special, and fake goods or fake goods are very light or even smell. If you want to know the authentic taste, you may wish to go to the regular pharmacy to see, authentic fragrance and fake goods will know.
Observation discrimination
Put the saffron on white paper, spread it carefully, and the parents of the saffron are long, the color is dark red, no oil-free luster, the yellow flower column is small, dry after dryness, and easy to break. Although it is broken, it is a speaker-shaped or a red flower in a white bag. After shaking a few times, the flour of saffron will stick to the bag, yellowish, obvious.
Northerometer
Take a small piece of red flower with a face towel to extrusion in the intermediate force, and there should be oil marks on the paper, otherwise the mineral or vegetable oil is doped.