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How to identify genuine and fake compound fertilizer
1. Packaging identification method. Mainly depends on the production license, fertilizer registration certificate, product certification is complete and effective. 2. Simple visual inspection. Special compound fertilizers are all subjected to a set of complicated procedures for extrusion granulation or disc granulation. The colors are grayish or light gray, with few variegated colors and uniform granulation, 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. 3. Hand pinching method. The real compound fertilizer is generally made by high-temperature melting, cooling and granulation, and then dried. It has good stability, high hardness, and consistent hardness. Hand pinching is not easy to break or soft. The counterfeit compound fertilizer has poor hardness, inconsistent hardness, easy pinching, or soft and muddy. 4. Smell method. Pinch a small amount of compound fertilizer and smell it. If ammonia is found, it is a low-content compound fertilizer or it contains mixed ammonium bicarbonate. If other odors are found, it may be counterfeit special compound fertilizer. The total content of true nutrient compounds is more than 25%. Generally, it has the advantages of stable composition, no decomposition or melting, etc. Therefore, no odor will occur and no ammonia will appear.