How to judge humic acid fertilizer is true
First, check the implementation criteria.
At present, humic acid products on the market are more chaotic and there is no uniform standard. NY/T1106-2010 "Water-soluble fertilizer containing humic acid" is the industry standard for humic acid fertilizer released by the Ministry of Agriculture, and the rest is the enterprise standard. If humic acid is added to the compound fertilizer or blended fertilizer, the content of humic acid can only be indicated in the package component, but the big name on the fertilizer package cannot be changed, that is, the package must be marked as compound fertilizer or Mixed fertilizers cannot be marked as containing humic acid compound (mixed) fertilizer. At the same time, the nitrogen, phosphorus and potassium contents of the fertilizer must also meet the compound fertilizer standard or the blended fertilizer standard.
Secondly, check the humic acid content on the package.
According to the relevant regulations, the content of humic acid should be clearly marked on the humic acid fertilizer packaging bag. If only the word containing humic acid is marked, and it is not specifically labeled, it should be taken care of. After all, 0.01% is also included.
Finally, check the product instructions.
The use of humic acid fertilizers varies from crop to crop and from period to time. Therefore, the instructions for use of fertilizers must be written in detail and carefully written. If the instructions are rough and there are no professional technicians to use the instructions, it is not recommended to buy.
To distinguish the quality of humic acid fertilizer, it can be judged according to its water solubility and color.
Place the humic acid fertilizer in the water and observe how fast it dissolves, whether it is completely dissolved, and whether there is any sediment. Generally good quality humic acid fertilizers perform well. Pour a small amount of humic acid water-soluble fertilizer in clean water. If the color is very dark, it may be dyed. If it is humic acid fertilizer granules, it can be rubbed by hand, faded and the color is difficult to wash off with water, and there is also suspected dyeing. It is also possible to crush the granules to see if the color inside and outside is uniform and dark brown. If it is only black outside and white (or other colors) is also stained. Special emphasis is that there is a kind of fertilizer in the market that is white granules. It is said to contain white humic acid, so it is white. If you encounter it, you must not buy it because there is no white humic acid.
Some humic acid fertilizers are added with humic acid powder that has not been activated or activated to a low degree. The humic acid fertilizer produced by it has poor effect and slow effect. Taking phosphate rock powder as an example, although phosphate rock powder also has phosphorus content, the effect is very slow and poor, and processing into superphosphate can give the best effect. The same is true for humic acid, which must be activated before it can exert its effectiveness. If the price of humic acid fertilizer encountered is very low, it is likely to be a humic acid fertilizer with added raw powder. Be careful.
1.Dimension: Customized dimension, OEM & ODM
2.Material: A7000 and other series alu alloy
3.Suface treatment: Anodizing, polishing, turning ,power coating, mill finish etc
4.Equipment: CNC ,extruding machine, cold drawn machine, heating oven, straightening machine, cutting machine
|
OD |
OD Tolerance |
ID Tolerance |
Roundness |
Straightness |
Circular run-out |
|
φ16-20 |
±0.02 |
±0.02 |
0.01↓ |
0.015↓ |
0.05↓ |
|
φ20-30 |
±0.02 |
±0.02 |
0.01↓ |
0.015↓ |
0.05↓ |
|
φ30-50 |
±0.05 |
±0.05 |
0.02↓ |
0.020↓ |
0.08↓ |
|
φ50-80 |
±0.15 |
±0.10 |
0.05↓ |
0.025↓ |
0.10↓ |
5. STANDARD PACKING:Wooden case/carton
6. Trade Terms
1. Payment: 30% T/T in advance, 70% balance pay before delivery. L/C at sight.
2. Delivery time: 20 days after deposit receiverd. If opening mould, plus 7-10 days.
3. Trade Term can be chosen depending on your requirements.
4. FOB Port: Shanghai
7000 Series Aluminium Bar,Aluminium Rod,Aluminum T Bar,Aluminum Z Bar
Changzhou YiFei Machinery Co., Ltd. , https://www.yifeialu.com