Quickly identify counterfeit pesticides
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1, the label content. The pesticide label should indicate the product name, pesticide registration certificate number, product standard number, production license number or production approval certificate number, as well as the active ingredients, content, weight, product performance, toxicity, use, use method, production date, and The expiration date, precautions, and the name, address, postal code, etc. of the manufacturer, and the dispensing of pesticides, should also indicate the sub-assembly unit. If any of the above is missing, you should ask questions;
2. Product name. The product name on the label must have the generic name of the pesticide (Chinese common name and English common name). Products that are not certain of the name of the pesticide ingredient contained in the product should not be easily purchased;
3. Product packaging. The specifications of the same metering products shall be the same, and they shall not be large or small, and the inner and outer packaging shall be complete and shall not be damaged;
4. Product certification. Each product of the pesticide product shall be accompanied by a factory inspection certificate to determine the quality of the purchased product;
5. Unlabeled and bulk pesticide products cannot be purchased.
Second, identify the pros and cons from the form of pesticide substances
1. Powder and wettable powder should be loose powder, no clumps and uniform color;
2. The emulsifiable concentrate should be a homogeneous liquid with no precipitation or suspended matter. If stratification and turbidity occur, or if the emulsion liquid diluted with water is not uniform or has oil slick or sediment, it may indicate that the quality of the product may be problematic;
3. Suspending agent and suspoemulsion should be a flowable suspension, no agglomeration, long-term storage, there may be a small amount of stratification, but it should be restored to its original state after shaking;
4. If the tablet used for fumigation is in powder form, it indicates that it has failed; 5. The water agent should be a homogeneous liquid, no sediment or suspended matter, and generally no turbid precipitation after dilution with water; 6. The granule product should be uniform in thickness. It should not contain many powders. Otherwise it is a fake pesticide.
Third, with a simple physical and chemical performance check
1. Wettable powder: Take a transparent glass bottle full of water, place it horizontally, take half a spoonful of medicine, pour it into water at a height of 1-2 cm from the water surface. The qualified wettable powder should be able to gradually step in the water faster. Wet dispersing, the total wetting time will generally not exceed 2 minutes. After the excellent wettable powder is put into the water, it can form a good suspension without stirring. For example, shake the bottle and stand still for one hour, the bottom solid sediment Should be less; 1, oil: use a transparent glass bottle filled with water, use a dropper or glass rod to remove the liquid, drip into the still water surface, qualified cream (or emulsion with good emulsifying properties) should be able to Disperse rapidly downwards and all around, form a white milky emulsion with a little stirring, stand still for half an hour, no visible oil beads and sediment; 3, water-soluble emulsifiable oil: the dosage form can be miscible with water, does not form milky white; Suspension emulsion: Dry suspending agent refers to spontaneous dispersion after being weighed by water. The original drug is dispersed in water with particles with a particle size of 1 to 5 microns to form a relatively stable suspension. Otherwise it is a fake pesticide.
4. Check the national regulations with the Pesticide Registration Certificate. The pesticide registration certificate or the temporary pesticide registration certificate must be applied for the production of pesticides. Therefore, when the business unit and the farmer purchase pesticides, they have the right to request the manufacturer and the distribution unit to present the product. A copy of the pesticide registration certificate and check with the label of the product. If the registration number and label content on the product label are found to be inconsistent with the contents of the registration certificate, it is a counterfeit pesticide.
Author: Zhejiang Kaihua County Seed Management Station Xu Act III (originally published in civilized agricultural 110)
Feed: Zhejiang Seed Management Station 