Zonglan Hand Tools for eyelets consist of piercing and attaching hand toolsets. Eyelet Dies,Grommet Machine Dies,Eyelet Flaring Die,Eyelet Press Dies NINGBO ZONGLAN MECHANICAL AND ELECTRICAL EQUIPMENT MANUFACTURE CO., LTD , https://www.zonglaneyelet.com
(1) Burning method: The ammonium nitrogen will decompose after being heated. Therefore, a small amount of fertilizer can be placed on the iron piece during the identification and burned on the flame. If a strong irritating odor is produced, and no residue remains, it is a nitrogen fertilizer with high purity; if there are more residues, it means that the nitrogen content is low.
(2) Dissolution method: ammonium nitrogen can be dissolved in water. A small amount of chemical fertilizer can be used, and a small amount of water can be added. If all is dissolved, the nitrogen content is high in purity, and if it is partially or completely insoluble, it contains more impurities.
(3) Adding slaked lime stirring method: mixing and stirring a small amount of chemical fertilizer and slaked lime, and immediately smelling a strong nitrogen fertilizer, indicating that the nitrogen content is high.
(4) Color reaction method: ammonium bicarbonate, ammonium carbonate is alkaline, can be boiled with carrot skin (or red leeks), take the clear liquid, put a small amount of ammonium bicarbonate into the clear liquid, if carrot skin It turns pure from purple to light green (or red amaranth juice changes from red to yellow green).
Phosphate Fertilizer The appearance of superphosphate should be gray granular, acidic, and partially soluble. Add calcium phosphate to a small amount of water. If it is partially dissolved, it can be preliminarily determined to be superphosphate. In the above carrot juice (or red leeks juice), if the solution changes from purple to bright red (or red leeks juice changes from red to deep red), the quality of superphosphate is good.
This manual set is designed to be used with a hide face mallet. It is good for piercing material and attaching curtain eyelets afterward. Not all hand tools are the same and it is not easy to find such a highly qualified hand tool for attaching curtain eyelets in today`s world.
Though these tools are designed for low-volume eyelet application projects, Zonglan Hand Tools are professionally designed and produced with advanced technology for decades of problem-free use. Zonglan Hand Tools are made of Stainless Steel to increase their resistance to oxidation. Their surface is specially treated for metal hardening for stronger durability against harsh hammer usage.
Zonglan Hand Tools are designed in such a manner affording the use of minimum force with maximum comfort. In addition, thanks to its precision, the eyelet application quality of Zonglan Hand Tools is far better than the application quality of its ordinary competitors.
Our hand tools sets are available for 6mm,10mm and 12mm Easy Apply Zonglan eyelets and are suitable to attach them onto various substrates, including tarpaulin, drapery and home textile.
Method for quickly identifying commonly used fertilizers
Nitrogen fertilizers Urea, ammonium sulfate, ammonium bicarbonate, ammonium chloride and other fertilizers all appear white crystals and can be identified by the following methods.
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