Size:Adult #1,#2,#3 Matrix Bands,Dental Matrix Bands,Orthodontic Matrix Bands,Tofflemire Matrix Bands Tribest Dental Products Co., Ltd. , http://www.tribest-dental.com
Child #13
Various models
Thickness: 0.03mm,0.04mm,0.05mm,0.06mm
Normal:0.04mm (0.0015") & 0.05mm(0.002")
Material:Highest Medical Grade stainless steel
Shape: Universal,Broad,Narrow
Finishing: Dull-polished
Rusting:Prevention Procedure passivated
Test Performed: Boil Test,Performance,Shape Test
Autoclave: Yes
Common mistakes of applying fertilizers in farms
The common mistaken chemical fertilizers used by farmers in fertilizers are widely used by farmers because of their high content of active ingredients, rapid development of fertilizer efficiency, and ease of storage and transportation. However, in the production practice, due to improper application measures, the fertilizer efficiency is reduced or even caused harm. Several common misapplication methods are listed. 1. Diammonium phosphate is applied with water. After diammonium phosphate is applied with water, it is very easy to cause the loss of nitrogen in the volatilization. Phosphorus also stays on the surface and is not easily sent to the root of the crop. Crops can neither get nor get phosphorus, and diammonium phosphate equals white. Therefore, diammonium phosphate should be promoted as base fertilizer application. If you do topdressing, you should apply early, deepen the ditch, cover the soil after application, and generally require fertilization ditch depth of about 10 cm. 2. The superficial application of ammonium bicarbonate and the tight cover soil result in low fertilizer utilization. Therefore, the application of ammonium bicarbonate should be deeply applied to the soil and timely watering, so that ammonia is fully absorbed by the soil to improve fertilizer efficiency. Tests show that the deep application of ammonium bicarbonate can increase the utilization rate by 10%-30%. 3, urea top soil applicator eager to irrigation, even with flood irrigation caused by urea loss. Therefore, when topdressing with urea, it is necessary to open the ditch or apply a hole, and the depth of fertilization should be 7-10 cm. After the application, cover the soil immediately and pay attention to uniform fertilization. After the topdressing, 2-3 days in summer and 6-8 days in spring and autumn. 4, superphosphate direct seed dressing. Superphosphate contains 3.5%-5% free acid, which is highly corrosive. For example, direct seed dressing with superphosphate, especially after long-term storage, can easily corrode seeds and reduce seed germination rate and emergence rate. . Therefore, using superphosphate as a seed fertilizer, it is best to apply it in the sowing ditch, and separate the fertilizer from the seed with soil.