Six Methods for Distinguishing True and False Urea

A look: true urea is a translucent five-color particle of the same size. If the surface color of the particles is too bright or dark, or shows obvious reflection, it may be mixed with impurities, so be careful to buy fake urea.

Second check: check the production batch number and sealing of the package. The production batch number of the real urea package is clear and the machine seal is stacked on both sides; the production batch number on the fake urea package is not clear or not, and most of them are sealed by single-line manual sealing.

The third claim: the difference between the urea produced by regular manufacturers and the actual weight is generally less than 1%, while the urea with fake real is very different from the standard weight.

Four touches: the true urea particles are of the same size and are not easy to agglomerate, so they feel better, while the fake urea hands feel burning and stinging when touching.

Wuxiao: pure urea melts quickly on fiery red charcoal, emitting white smoke and smelling of ammonia. If it burns violently on the charcoal, glows brightly, and has a "hiss"; or if it melts endlessly, it must be mixed with impurities.

Liuwen: urea from regular manufacturers has no volatile smell under normal circumstances, and ammonia smell can be produced only after being exposed to moisture or high temperature; if the volatile smell is strong under normal circumstances, there are impurities in urea. (Liu Jingyun)