Samples of chemical fertilizers are heated or burned, and the true and false fertilizers can be further identified from the flame color, melting condition, smoke taste, residue, and the like.
Nitrogen fertilizer: Ammonium bicarbonate, decomposes directly, produces a lot of white smoke, has a strong ammonia smell, no residue; ammonium chloride, directly decomposes or sublimates a lot of white smoke, strong ammonia and sour taste, no residue; urea , Can quickly melt, white smoke, put into the charcoal fire can burn, or take a glass sheet contact with white smoke, can see the glass sheet attached with a layer of white crystals; ammonium nitrate, does not burn, melt and appear boiling, emerge Aroma of ammonia smoke; calcium nitrate, melted and burned, emits bright light, white lime residue.
Phosphate fertilizers: Superphosphate, calcium magnesium phosphate fertilizer, phosphate rock powder, etc. did not change on red wood charcoal; bone powder quickly turned black on charcoal, giving off char smell.
Potassium: Potassium sulfate, potassium chloride, potassium magnesium sulfate, etc., have no change in red charcoal, and they give off sound.
Compound Fertilizer: Compound fertilizer combustion is closely related to its constituent raw materials. When the raw material contains ammonia nitrogen or amido ammonia nitrogen, strong ammonia odor will be released, and there will be a lot of residue; ammonium phosphate fertilizer can be melted on red wood charcoal. Smoke, and ammonia smell.
Boron fertilizer: On red charcoal, it will become dry and will not extinguish.
Adult diapers are disposable urinary incontinence products, one of the adult care products, and a disposable diaper mainly suitable for incontinent adults.
Most products are flaky and shorts type. Use adhesive sheets to connect into a pair of shorts. The adhesive sheet also has the function of adjusting the waist size so as to fit different fat and thin body shapes.
Generally, the structure of diapers is divided into three layers from the inside to the outside. The inner layer is close to the skin and made of non-woven fabric; the middle layer is water-absorbent fluff pulp, added with polymer water-absorbing agent; the outer layer is an impermeable breathable film.
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