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How to identify the authenticity of pesticides?

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How to identify the authenticity of pesticides

fake pesticide refers to that the pesticide name indicated in the index is inconsistent with the pesticide in the actual package, and the fake pesticide is regarded as the real pesticide. Inferior pesticides refer to the main indicators of pesticides in the package that do not meet the quality standards

the identification of fake and inferior pesticides can be carried out from the following aspects:


look at the outer packaging and contents. Inferior pesticides generally have poor printing quality or poor pasting, and the packages are seriously stained. Emulsified oil, ultra-low amount of emulsified oil and water agent, aqueous solution agent, microemulsion and other turbid impurities with stratification and precipitation; Water emulsion, suspending agent, etc. are seriously stratified, and they are inverted after shaking gently, and there are still a large amount of sediment or caking at the bottom; The powder and wettable powder are seriously caked, and there are hard lumps by hand; The sheet fumigant is powdered, and the fumigant is seriously affected by moisture

second look at the label. Read the label carefully. Check whether all contents are comprehensive according to the 14 basic content requirements of the label; In particular, the “three certificates” (production permit number, production standard number and pesticide registration number) shall be complete. Consult the pesticide registration announcement to see whether the registration certificate number on the label is the same as that in the announcement and whether the manufacturer is the same manufacturer; Whether the registered crops and dosage are consistent with those indicated on the label; Check the area code of the pesticide manufacturer, and carefully check the telephone number and the address of the pesticide manufacturer according to the area code marked on the label

1. Identify from the pesticide label. The pesticide label shall indicate the product name, pesticide registration certificate number, product standard number, production license number or production standard certificate number, as well as the effective ingredients, content, weight, product performance, toxicity, purpose, use method, production date, validity period, matters indicated, and the name, address and postal code of the manufacturer. In case of sub packaging of pesticides, the sub packaging unit and the number of pesticide sub packaging registration certificate shall also be indicated
2. Judge from the name of pesticide products. The product name on the label shall be the common Chinese name or legal trade name. However, at present, the names of pesticide products on the market are very chaotic. Some take the trade names at will, and some add the words “Wang, Huang, Zhi, FH, CP, type I, type II, compound, efficient, non-toxic and no residue” at will. These are illegal names. Pesticide buyers should carefully check the pesticide label first, and do not buy products that are not sure of the name of the pesticide components contained in the products easily
3. The specifications of products with the same measurement should be the same, not big or small, and the internal and external packaging should be complete without damage
4. View the product factory certificate. According to the regulations on the administration of pesticides and relevant regulations, each product packaging box shall be attached with the product factory certificate. The pesticide buyer can first ask the operator to show the factory certificate to ensure the quality of the purchased products
5. Pesticide products in bulk cannot be purchased. Because producers and operators can adulterate at any time, it is difficult to deal with problems
identify the advantages and disadvantages from the form of pesticide substances
1. Powder and wettable powder should be loose powder without agglomeration. If there is caking or more granular feeling, it indicates that it has been affected by moisture. Not only the fineness of the product cannot meet the requirements, but also the content of its effective components may change. If the color of the product is uneven, it also indicates that there may be quality problems
2. The emulsion should be a homogeneous liquid without sediment or suspended solids. If stratification and turbidity occur, or the emulsion diluted with water is uneven or there is oil slick and sediment, it indicates that there may be problems in the product quality
3. Suspensions and emulsions should be flowable suspensions without caking. If they are stored for a long time, there may be a small amount of stratification, but they should be able to return to the original state after shaking. If the product cannot return to the original state or there is still caking after shaking, it indicates that the product has quality problems
4. If the fumigation tablet is in powder form, it indicates that it has failed
5. The water agent should be a homogeneous liquid without precipitation or suspended solids. Generally, there is no turbid precipitation after dilution with water
6. The granular product should be uniform in thickness and should not contain a lot of powder.

go to Baidu app to view

 first, look at the "three certificates" and whether to indicate the composition and content 

 Second, it depends on the production address, manufacturer, etc., and the place of origin is not marked or the identification is vague (for example, it is fake in many cases, such as XXX city or XX county) 

 Third, it depends on the quality of packaging. If the bottle is rough and the label paper is easy to fall off, the quality is not very good 

 Fourth, it depends on whether the date is changed after expiration. The production date of regular manufacturers is sprayed on the bottle cap or bottle body by machine, and fake drugs are mostly covered on the bottle body with simple seal label 

 (1) check whether the outer package, inner package, label content, production date, batch number, etc. are complete. The shelf life of pesticides is generally 2 years

 (2) in terms of appearance, qualified pesticides have the following characteristics. ① Emulsion pesticide: generally light yellow or dark brown transparent liquid. Observe whether there is stratification. If there is stratification, the emulsion formed after dilution with water is unstable. ② Wettable powder pesticides: do not agglomerate and form a good suspension after dilution with water. ③ Suspending agent: viscous liquid that can flow. It is allowed to be layered after storage, but it can still be restored to its original state after shaking by hand. It is not allowed to agglomerate. ④ Granule: the particle size and color are uniform, no dust, dry and loose


 pesticide inspection report? Not pesticides 


 pro, then you need a special appraisal organization 


 query the authenticity of pesticide inspection report 


 Yes, it is necessary to go to the special agency in the provincial capital city for appraisal 

8 more

I. check the pesticide packaging

1. According to the national standard, gb3796-1983 general rules for pesticide packaging, the outer packaging box of pesticides shall be corrugated cardboard with moisture-proof layer. The outer packaging window shall be labeled with product name, category, specification, gross weight, net weight, production date, batch number, storage and transportation indication mark and manufacturer name. At the bottom, there shall also be a label indicating the category of pesticide: Herbicide green; Insecticide – red; Fungicide – black; Rodenticide – blue; P
lant growth regulator – dark yellow
there must be a certificate of conformity in the pesticide package. Labels must be firmly pasted on the inner packaging of pesticide preparations, or directly printed and marked on the packaging. The label contents include the general product name, enterprise name, active ingredient, dosage form, specification, pesticide registration certificate number, product standard code, production approval number, net weight or net volume, scope of application, method of use, taboo of application, poisoning symptoms and first aid, drug harm, safety interval, storage requirements, etc

II. Test the physical and chemical properties of pesticides:

1. Emulsifiable concentrate pesticides are generally light yellow or brown transparent liquid. If there is stratification, precipitation or suspended matter after dilution with water, it can be determined that the pesticide is fake and inferior

2. Emulsion pesticides are mostly bottled in glass. If stratification is found by naked eye observation, shake the bottle up and down. After 1 hour, if there is no stratification, it indicates that the pesticide is effective. If stratification still occurs, it indicates that the pesticide has failed

3. When identifying the powder, take a cup of clear water and gently sprinkle the powder on the water. If all the powder seeps into the water within 1 second, it indicates that the drug has not failed. If the powder does not infiltrate for a long time, it indicates that the drug has failed

how to identify the “three certificates” of pesticides

pesticides are important agricultural materials and special commodities. According to the national pesticide administration regulations, the State implements the pesticide registration system; The State implements the pesticide production license system; Pesticide production enterprises shall carry out production in accordance with the quality standards and technical regulations of pesticide products… Before leaving the factory, pesticide products shall be subject to quality inspection and attached with product quality inspection certificate. This is what we usually call the three certificates of pesticides, which are indispensable. How should we identify the three certificates of pesticides to prevent fake and inferior pesticides? Now let’s take a look at the legendary science and technology series and introduce

1. Pesticide registration certificate: the temporary registration certificate starts with LS or WL. The official (variety) registration certificate number starts with PD, PDN or WP, Wpn. The sub packaging registration certificate number is generally added with “- XXXX” on the basis of the pesticide registration certificate number provided by the original manufacturer, which represents the abbreviation of the province (autonomous region or municipality directly under the central government), and XXXX represents the serial number

2. Production license No.: hnpaaxxx-b-yyyy, where AA is the provincial code, XXXX is the enterprise code, B is the product type and yyyy is the product name

3. Quality standard certificate: China’s pesticide quality standards are divided into national standards, industrial standards and enterprise standards, and their certificate numbers start with GB or Q respectively

the three certificate numbers that do not start with the above English letters ls, PD, XK and Q are often written by the manufacturer or dealer, which is not protected by law. Their quality is questionable. You can report to the relevant departments in the process of purchase, and you can ask others for advice if you don’t understand, so as to prevent being cheated!

have you bought these problematic pesticides? Today, I’ll teach you how to distinguish true and false pesticides (distinguish true and false pesticides in orchard and fruit trees)

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