How to Identify Original vs Fake DAP Fertilizer | Bilal Kanju Official

Описание: If you want to check whether DAP fertilizer is genuine or fake, the most reliable method is to take a proper sample and get it tested in a laboratory. A lab analysis provides the final and confirmed result.
However, if you want to make a quick estimate at home, there are a few simple methods you can try. Keep in mind that these are only preliminary checks, not definitive proof.
First Method:
Press a DAP granule between your fingernails. Genuine DAP granules are hard and do not break easily. If the granule crushes very easily, it may not be pure.
Second Method:
Place a few granules on a metal plate or pan and heat them. Genuine DAP starts melting when heated. If the granules do not melt and show no significant change, there may be adulteration such as SSP or soil material mixed in.
Third Method:
Take a few DAP granules and mix them with a small amount of lime (calcium oxide or calcium hydroxide). Bring the mixture close to your nose carefully. If you smell ammonia gas, it indicates the presence of ammonium, which is a key component of DAP.
If any of these tests create doubt, especially when purchasing in bulk quantity, it is strongly recommended to contact the relevant agricultural department or an authorized laboratory for proper sampling and testing.
These methods are only for rough estimation and personal satisfaction. They are not final, legal, or scientifically conclusive results.

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