How to identify the authenticity of potassium sulfate

There are two ways. The headline author of "Ten Stars Technology", the general consultant and deputy editor-in-chief of North Rural Network Science and Technology, will answer your questions:

The first method: the most commonly used method of "Ten Star Technology"

For example, in our corn variety and cotton variety contrast experimental field, potassium sulfate is needed for topdressing. At present, the best ratio of nitrogen and potassium required by crops is1:1-however, there are many potassium pseudosulfate in the market.

What should we do?

We searched online for "Lop Nur, Xinjiang" potash fertilizer, which was trustworthy, so we called their manufacturers, who told us the telephone numbers of general agents in various provinces, and then directly asked them to deliver the goods nearby. Because it is not used much, it is 5 1% granular, and the retail price is 145 yuan 100 kg.

In addition, we need potassium chloride fertilizer for wheat preparation and sowing. We contacted Bifeng Group, Canada Potash 60%. Yantai Port is delivered to us per ton 1950 yuan.

The supplier delivers the goods directly, and the authentic rate is 100%, so don't worry.

The second method, sampling to the local agricultural department or quality supervision bureau for testing.

The dosage is relatively large, so you don't trust. It is recommended to take samples for testing. Generally, a sample is about 100 yuan.

In this way, it is foolproof.

Related link articles are as follows (according to the information of Northern Rural Network):

Technical indicators of agricultural potassium sulfate specified in the standard GB 20406-2006 of Agricultural Potassium Sulfate are as follows:

1, potassium sulfate should be produced according to the national standard GB20406-2006. It is required that the potassium oxide content of first-class products should be above 50%, that of powdery qualified products should be above 45%, that of granular qualified products should be above 40%, and that of fake and inferior products should not meet the standard. Many packages only indicate that the content of potassium oxide is greater than 16%, 22% or 33%, which belongs to unqualified products.

2. If other elements are included in the total nutrient confusion standard, they will be mistaken for reaching the standard if they are not careful. Such as K2SO4≥50%.

3. Fake imported potash fertilizer marked with country name, potassium sulfate or information of nominal raw material importing country. For example, "American potassium sulfate" or "country of origin: Russia" potassium sulfate are counterfeit imported fertilizers.

4. Imported fertilizers should be marked with "Import ContractNo." on the packaging, and counterfeit potash fertilizers should be marked with "Import and Export Enterprise Code". Such as "country of origin-Finland" potassium sulfate. 5. Use enterprise standard potassium sulfate, and even indicate the origin of the original potassium, so that consumers mistakenly think it is an imported product. For example, potassium polyphosphate labeled "origin of raw potassium: Canada" is a counterfeit product. 6, disorderly standard production license number. At the same time, the packaging is marked with QS quality and safety marks, which makes consumers mistakenly think that the products are qualified products. 7. The product name does not meet the implementation standards. Potassium sulfate adopts national standards, and counterfeit fertilizers mostly adopt enterprise standards or chemical industry standards.

8. Various forms of potash fertilizer. For example, "potassium sulfate type" will dilute the "type" and make consumers think that the product is potassium sulfate. The package is marked with the import and export code of the enterprise and the words "Golden Horse of America".