A check: check the production batch number and seal of the package. The genuine Urea bag is produced on the general packaging bag with the batch number clearly and the machine is sealed on both the front and the back. The production batch number on the fake urea package is unclear or not, and most of them are manually sealed by a single line.
Second look: True urea is a translucent and uniform colorless particle. If the surface color of the particles is too bright or dark, or appears to be significantly reflective, impurities are mixed.
Sanwen: The urea produced by regular manufacturers has no volatile odor under normal conditions, and ammonia smell is only produced after being wet or subjected to high temperature. If the volatile taste is normal under normal conditions, it must contain impurities.
Four touches: The true urea particles have the same size, are not easy to agglomerate, have strong fluidity, and therefore have a good hand feeling; while the fake urea has a burning sensation and a thorny hand when touched.
Five-burning: Pure urea is quickly dissolved on the red charcoal, which emits white smoke and has an ammonia smell. If there is intense burning on charcoal, strong light, and with a "beep" sound, or melting is not enough, then there will be impurities mixed.
Six scales: The urea standard weight produced by regular manufacturers is generally within 1% of the actual weight, while the fake true urea is quite different from the standard weight.
Second look: True urea is a translucent and uniform colorless particle. If the surface color of the particles is too bright or dark, or appears to be significantly reflective, impurities are mixed.
Sanwen: The urea produced by regular manufacturers has no volatile odor under normal conditions, and ammonia smell is only produced after being wet or subjected to high temperature. If the volatile taste is normal under normal conditions, it must contain impurities.
Four touches: The true urea particles have the same size, are not easy to agglomerate, have strong fluidity, and therefore have a good hand feeling; while the fake urea has a burning sensation and a thorny hand when touched.
Five-burning: Pure urea is quickly dissolved on the red charcoal, which emits white smoke and has an ammonia smell. If there is intense burning on charcoal, strong light, and with a "beep" sound, or melting is not enough, then there will be impurities mixed.
Six scales: The urea standard weight produced by regular manufacturers is generally within 1% of the actual weight, while the fake true urea is quite different from the standard weight.
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