How to identify real vs. fake urea? Six identification methods to teach you

First, look: real urea is a kind of semi-transparent, uniformly sized, five-color granule. If the granule surface is too shiny or too dull, or shows obvious reflection, it may be mixed with impurities. In this case, be extra cautious and watch out for buying fake urea.

Second, check: check the production batch number and the seal on the packaging. Real urea generally has a clear production batch number on the bag and machine-sealed edges folded on both the front and back; fake urea packaging has an unclear or absent production batch number, and most use single-line manual sealing.

Third, weigh: urea produced by legitimate manufacturers generally differs from the actual weight by less than 1%; whereas urea passed off as genuine differs greatly from the standard weight.

Fourth, touch: real urea granules are uniform in size and not prone to caking, so they feel better in the hand; while fake urea gives a burning and prickling sensation when touched.

Fifth, burn: pure genuine urea placed on glowing charcoal melts quickly, gives off white smoke, and has an ammonia smell. If it burns violently on the charcoal, emits a strong light, and makes a "hissing" sound; or if it does not melt completely, then it must be mixed with impurities.

Sixth, smell: urea from legitimate manufacturers normally has no volatile odor, and only produces an ammonia smell after absorbing moisture or being exposed to high temperatures; if the volatile odor is strong under normal conditions, then the urea contains impurities. (Liu Jingyun)