Packaging identification method. Mainly to see whether the packaging according to compound fertilizer packaging requirements, the three license (ie, production license, fertilizer registration certificate, product certification) is complete and effective, but also depends on whether the content is consistent with the content of the internal content, must not be coveted cheap and deceived .
Simple visual inspection. In general, as long as it is genuine, special compound fertilizers have to go through a complicated process, or extrusion granulation or disk granulation, the color is simple, or gray or light gray, with little variability, and made The pellets are relatively uniform, either round or cylindrical. The counterfeits and special compound fertilizers are mostly not deep-processed, and are made from coarse or ordinary blends. The colors are not pure, and the granulation is not uniform, and some of them are not granulated and become flour-like.
Hand pinching method. The real compound fertilizer is generally made by high-temperature melting and cooling granulation and then dried. It has good stability, high hardness, and uniform hardness. It is not easily broken by hand pinching and is not easy to be soft. The counterfeit compound fertilizer has poor hardness, inconsistent hardness, easy pinching, or soft and muddy.
Smell method. A small amount of compound fertilizer is used to smell and sniff, and if ammonia smell is found, it is a low-content compound fertilizer with a mixture of ammonium bicarbonate and a low total content. If there are other odors, they are mostly fake and special compound fertilizers. The true special compound fertilizer or the total nutrient content of more than 25%, generally has the advantages of stable composition, will not decompose or melt, etc., so no odor will occur, and ammonia smell will not appear in general.
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