Potassium dihydrogen phosphate has always been a very popular fertilizer for farmers. Potassium dihydrogen phosphate not only promotes fruit expansion and color change, but also promotes crop metabolism, and can improve crop rooting, antifreeze and stress resistance. Potassium dihydrogen phosphate is also a high-concentration high-quality non-chlorine potassium fertilizer with very low salt value. It is suitable for use in citrus, apple, grape, kiwi, wheat, rice and other crops. It is an excellent fertilizer variety designated by the Ministry of Agriculture. First, but some industry veterans said that there are many problems with potassium dihydrogen phosphate in the market, and even 60% can be identified as fakes.

Strange phenomenon: The retail price is actually lower than the regular ex-factory price!

Some agricultural stores, a package of 400 grams of potassium dihydrogen phosphate retail as long as 2 to 3 yuan, which is lower than the ex-factory price. There is no loss business in the world, no doubt, such potassium dihydrogen phosphate must be tricky. Many dealers are also eccentric, and some merchants simply sell fakes with the flow of money. Some merchants simply don't sell potassium dihydrogen phosphate. Selling genuine potassium dihydrogen phosphate can't make money, selling fakes. The effect also lost customers, resulting in the embarrassing situation of potassium dihydrogen phosphate in sales.

Now, the author to expose the main falsification techniques of potassium dihydrogen phosphate:

1 Mainstream fraud method: fraudulent use of magnesium sulfate

Replace with magnesium sulfate, this is the most common way to fake potassium dihydrogen phosphate. Some users think that buying potassium dihydrogen phosphate is also good for adding magnesium sulfate. After all, crops need to be supplemented with magnesium and sulfur, but I tell you, The cost of potassium dihydrogen phosphate is ten times that of magnesium sulfate.

Since the raw material of magnesium sulfate is an industrial scrap, containing a small amount of iron and other heavy metals, the product is generally yellowish, opaque and bitter.

After the fake product is sprayed, the leaves are green and the leaves are thin and brittle. When the dosage is large, the shoots tend to become red and not grow, and even the leaves are slightly rust-colored and burnt.

2 adulterated with magnesium sulfate, potassium chloride, monoammonium phosphate, sodium sulfate, industrial salt, etc.

This type of falsification mainly uses magnesium sulfate, and some potassium chloride, monoammonium phosphate, sodium sulfate, industrial salt (sodium chloride), etc. are appropriately incorporated, and the adulteration is mixed according to a certain ratio. The price of this kind of anti-counterfeiting method is also low, the cost is only half or even lower than potassium dihydrogen phosphate. This method of fraud is relatively concealed. The simple method is difficult to judge the true and false, the taste shape is similar to the original, and the illegal cost is low. Mix a certain hormone to use.

Such products are generally difficult to achieve results, may threaten the health of crops, resulting in poor coloring of crops, and may lead to poor product quality, resistance to stress, disease resistance, cold resistance, and sometimes even burning leaves.

What's more, some companies add flavors to fakes in order to make them stand out, so that consumers can smell a milky fragrance when they open the package. The author believes that potassium dihydrogen phosphate with ammonia, milk aroma, rancid and other odors is false, because the real potassium dihydrogen phosphate is white odorless crystal.

3 potassium dihydrogen phosphate is not pure enough, containing calcium phosphate, etc.

Some non-production-qualified small workshops use the wet acid process to produce potassium dihydrogen phosphate. The production process is backward and does not meet the national product standards. The raw material is often the factory waste acid impurity, usually calcium and magnesium ions. Easy to agglomerate, yellowish green, these products are usually incompletely dissolved, and the leaves have a white film after spraying.

4 using industrial waste liquid fraud

In the electroplating and salt chemical industry, there are some waste liquids containing potassium dihydrogen phosphate. Some manufacturers use the "turn waste into treasure" banner to extract potassium dihydrogen phosphate in the waste liquid. In fact, they only use simple crude extraction, even Some companies only extract the dry matter after strong oxidative decolorization treatment. This type of potassium dihydrogen phosphate product is irregular in shape, unstable, and has color after deliquescence.

This kind of counterfeit damage is obvious. The heavy metals in the waste liquid seriously endanger the health of crops and directly threaten food safety. The strong oxidant residue of the waste liquid threatens the soil microbial environment, causing imbalance of acid and alkali in the soil, and the damage is huge.

How can I buy real potassium dihydrogen phosphate?

Potassium dihydrogen phosphate is a high-efficiency foliar application fertilizer, and it is also a high-phosphorus and high-potassium fertilizer that can be quickly absorbed by crop roots. It solves the problem that phosphate fertilizer is easy to solidify and potassium fertilizer is easy to leaching. It can almost reach 100% absorption in water dissolved state. It is a very good fertilizer, but a large number of fake and inferior products have destroyed the normal market order, and many farmers have lost confidence in potassium dihydrogen phosphate. How to get authentic potassium dihydrogen phosphate? There are many detection methods on the network, I think it is not very reliable.

Some people say that they are identified from the taste: buy potassium dihydrogen phosphate and open a few grains to taste it. The bitter taste is counterfeit potassium dihydrogen phosphate. Isn't this method feasible? Do you let people try to taste industrial salt, harmful heavy metals or even arsenic?

Some people say that some substances are added to the authentic potassium dihydrogen phosphate to identify: baking soda will bubble; adding zinc sulfate, ferrous sulfate has precipitation. However, in the farmer's home, where is the baking soda, zinc sulphate, ferrous sulfate and other substances? When it is difficult to become the next king to buy agricultural materials, his wife will remember to remind him to bring baking soda?

The author thinks that the reliable method is still:

First, look at the packaging

● The Chinese character “potassium dihydrogen phosphate” must be marked on the package, and there should be a detailed factory name, site, telephone number, and implementation standards. Others such as "composite", "improved", etc. are not authentic.

● There is a kind of fake: potassium potassium dihydrogen phosphate, the word "potassium dihydrogen phosphate" is written very large, the word "ammonium" is written very small; the small word "high-efficiency compound fertilizer (II) is marked on the upper right of the package bag. "Type", in the middle is marked with large characters of potassium dihydrogen phosphate or potassium dihydrogen phosphate type II, these are deceiving the people.

● In the description, the product is composed of nitrogen, phosphorus and potassium, and even contains high-tech nouns such as boron, zinc, iron, calcium and magnesium, trace elements (hormones), growth factors and rare earths. Fake and shoddy, deceiving farmers and friends. It is well known that 98% potassium dihydrogen phosphate contains only phosphorus and potassium, and does not contain nitrogen or trace elements. There is no I, II, compound, composite or improved type in the national standard, so the content of the ingredients is marked as " Nitrogen, phosphorus, potassium, "complex", "containing trace elements", "rare earth", "composite", "improved" potassium dihydrogen phosphate can be regarded as fakes.

● The liquid bottled liquid potassium dihydrogen phosphate is distributed in the market. It does not conform to the requirements of HG2321-1992 standard “white crystal or powder appearance”, and according to relevant national regulations, there is no liquid potassium dihydrogen phosphate product. It does not meet the requirements of the Ministry of Agriculture's fertilizer registration at all, and production is not allowed. It can be regarded as a fake.

● The packaging is simple and rough, the name of the factory, the name of the factory is unknown, the name of the factory is used, and the telephone is not available. It also indicates “high purity”, “import”, “authentic”, “complex”, “improved”, “nano”, etc. Nouns can be regarded as fakes.

Second, look at the price

The price is too low to be a fake. In general, agricultural sales of fake goods will not be sold at a high price. Generally, fakes are dumped at a low price, even when buying seeds or buying pesticides, such potassium dihydrogen phosphate is given free of charge. .

Third, simple experiment

It can be heated a little on the iron sheet, dissolved into a transparent liquid, and solidified into a translucent glassy substance after cooling, the probability of the product is large, and there is no smell of ammonia.

Fourth, retain evidence

When buying potassium dihydrogen phosphate, you must ask for valid evidence from the agricultural resources store. If you suspect that there is a fake, or if the product causes damage to the crop, you can find the relevant agricultural technology department to identify or test it.

Fifth, choose the products of the brand manufacturers

The quality of brand manufacturers is relatively guaranteed!

Farmers have to determine the authenticity of potassium dihydrogen phosphate. There are still some difficulties. After all, it is not very professional. Unless you spend money to go to a professional institution for testing, the minimum cost is 300 yuan, which is affordable for ordinary people.

The author believes that: the best detection method of potassium dihydrogen phosphate is the conscience of the production enterprise! The production enterprises with conscience will adhere to the quality bottom line, and the farmers will feel the good use effect of the products, and they will pass on by word of mouth. Good brand, no need to check, no need to test, feel free to use boldly! (黑马君)

This article URL: How to distinguish potassium dihydrogen phosphate from potassium dihydrogen phosphate

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