Observation of color and morphology The color of the phosphate fertilizer should be off-white and the form is powdery. If the color is white or yellow, it may be because the acid treatment is not complete and the phosphorus content is low. Smell the smell. Phosphate fertilizer is slightly sour, if not, it indicates that the use of sulfuric acid in the production process is insufficient, the reaction is incomplete, and its active ingredient content is low. If the acidity is too strong, the free acid content is too high, its fertilizer efficiency is low, and after application It inhibits the activity of microorganisms in the soil, burns the roots of the crop, and causes the seeds to fail to germinate. Phosphate moisture content is generally 8% -14%, feel cool after touching, but no trace. If water is squeezed out by hand, the water content is too high and the quality of this phosphate fertilizer is poor. If you feel dry soil with your hand, it means that the acid treatment is not complete, and its active ingredient content is low. Sample tests. sampling tests are conducted through relevant departments to determine the merits of phosphate fertilizers.
Flow Cytometry is an important tool in cell biology research.10,000 cells per second, the cell size, DNA content, extracellular proteins can be quickly, large throughput statistical analysis, divided into With high analysis sensitivity, more than ten parameters can be analyzed at the same time. It is known as the "CT" of biological laboratory.
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