Fertilizer inspection诀窍

At first glance, it is to look at the outer packaging, granularity and color of the fertilizer, the specifications and firmness of the regular production of the fertilizer, and the product name, the name and address of the production company, the production license number, the fertilizer registration certificate number, and the implementation standard. No., active ingredient, net weight, date of manufacture, quality shelf life, etc. Look at the consistency of the inspection report and packaging instructions. The total nutrient content is the content of nitrogen, phosphorus and potassium, and the trace element content should not be included;

The second grip means placing the fertilizer in the hand, holding a grip firmly, pressing and turning, and judging according to the hand feeling. It is true that the oil is wet in the hand and the particles are even and smooth;

Three scent refers to the method of identifying fertilizer by the special smell of fertilizer. For example, ammonium bicarbonate has a strong ammonia smell, ammonium sulphate has a sour taste, and generally fake fertilizer has no odor;

Four-burning refers to heating or burning a fertilizer sample, and identifying it by burning, generated smoke, melting, and residue;

Five-wet refers to the identification of the solubility of the fertilizer, and the fertilizer is dissolved in water to see its solubility. Urea looks difficult to identify true and false, put urea in a glass, pour distilled water for thorough agitation, if all dissolved in water is true, if there is a turbidity is fake.

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