Mixed fertilizer is also known as BB fertilizer, dry mixed fertilizer, is to point to by unit fertilizer or compound fertilizer through simple mechanical mixing and any two or three kinds of fertilizer containing nitrogen, phosphorus, potassium three kinds of nutrients, there is no obvious chemical reaction in the mixing process.
The ratio of n, P, K and trace elements is easy to adjust. According to the user needs to produce a variety of special fertilizer, more suitable for soil testing fertilizer.
We have many regular fertilizer formulas (For example: npk 15 15 15, npk 17 17 17, npk 19 19 19, npk 20 20 20 etc), and we also support the new NPK formula, please kindly check the attached file for your reference. and tell me which one you need, so that i can offer you the best price! NPK compound fertilizer conventional formula.pdf
Quality Standard
| Test Items | Index |
| Total Nutrient（N+P2O5+K2O）mass fraction %≥ | 35.0 |
| Soluble phosphorus/available phosphorus % ≥ | 60 |
| Moisture（H2O）%≤ | 2.0 |
| Particle size（2.00-4.00mm）%≥ | 70 |
| Chloridion%≤ | 3.0 |
| Secondary element single nutrient %≥ | 2.0 |
| Trace element single nutrient %≥ | 0.02 |
| The product implementation standard is GB/T21633-2008 | |
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