Silver is a very common metal, and there will be many finished products around us like jewelry, silver dollars, silver coins and so on. Because its price is not as expensive as gold and platinum, it is loved by more people. How to judge how pure the silver is, now we will introduce several methods.
1. Color discrimination method: Observed with eyes, it looks white, shiny, and fine workmanship. And the marks printed on the jewelry are high-quality silver jewelry, which is poor in color and dull, mostly fake silver jewelry
2. Bending method: The silver jewelry is lightly folded by hand, and the easy-to-bend and unbreakable color is high, and the stiff and reluctant people understand the lower color. The sterling silver jewelry will be cracked after bending or a few taps Impure silver and fake silver are the most fragile and fragile.
3. Throwing method: throwing silver jewelry from top to bottom on the platen, the bounce is not high, the sound is unstable, the silver jewelry with high color, the bubble is jumping high on the platen, the sound is sharp, it is false or Silver jewelry with low color.
4. Nitric acid identification method: use a glass rod to lower nitric acid below the silver jewelry file, showing a brown rice color, slightly greenish color, and a dark green, black color.
5. Permanent magnet identification: Real silver cannot be attracted by the magnet. Many fake silver jewelry on the market are made of nickel, which is absorbed by the magnet
6. Burning identification method: clamp the silver ornament with pliers and bake the silver ornament with a lighter. After 5 to 10 seconds, if the flame of the lighter turns green, it means that the ornament is a fake; if the flame of the lighter is still the same Is the original color, then the silver ornament is authentic.
The above six methods are short answer tests for whether it is silver jewelry. If you want to know how pure the silver jewelry you buy is, whether it is 925,990 silver jewelry on the market, our company Beijing Yitenuo Electronic Technology Co., Ltd. An instrument dedicated to measuring purity. Next, the product DH-300 will be introduced in detail.
The new generation of direct-reading Beijing silver jewelry purity measuring instrument DH-300 is widely used in silver jewelry recycling, banks, silver building pawn shops, etc. This machine adopts Archimedes principle, simple and convenient operation, fast measurement, accurate results, durable, economical and so on. Products comply with ASTM D792, GB / T 1033, HG4-1468,
JIS-K-6268, ISO 2781, UL, IEC, CCC, VDE and other national standards.
Specifications of Beijing Silver Jewelry Purity Tester:
1. Density analysis: 0.001 g / cm3
2. Maximum weighing: 300g
3. Minimum weighing: 0.005 g / 0.01 g
Beijing silver jewelry purity measuring instrument features:
1. Silver jewelry specific gravity (density), volume, purity percentage
2. Simple operation, convenient and fast measurement
3. Fully automatic zero tracking function
4. Use water as medium, but also other liquid medium
5. With actual water temperature compensation function
6. With buzzer function
7. Adopt integrally formed large-capacity design measuring accessories
8. Configure special wind and dust cover
Standard accessories:
①Host, ② sink, ③ measuring table, ④ tweezers, ⑤ thermometer, ⑥ 100G weight, ⑦ windproof and dustproof cover, ⑧ a power transformer
Measurement steps:
â‘ First measure the weight of the product in the air, press ENTER to store the memory.
â‘¡ Put it in water again to measure the weight in water, press ENTER to store, and display the density value.
After-sales service and commitment:
1. All products are original authentic products.
2. All products are guaranteed for one year free of charge, lifetime maintenance, all costs incurred during the warranty period shall be borne by us.
(Except for natural disasters and man-made phenomena)
3. In the event of damage to the instrument during transportation, we shall bear all responsibilities and guarantee to replace the new product within 4 days.
4. How to use, we teach the buyer to use the technical staff until they are fully skilled.
5. For other detailed purchases, please refer to the contract terms agreed by both parties.
The above is the information of Beijing Silver Jewelry Purity Measuring Instrument. If you have any questions or purchase intention, please call Beijing Yitenuo Electronic Technology Co., Ltd. for details.
Components are a common window decoration that can effectively control light and ventilation. It consists of multiple independent horizontal or vertical rotatable lamellae, the angle of which can be adjusted by pull cord or manual operation to achieve the purpose of controlling light and privacy. Blinds usually consist of the following components:
1. Laminate: The main component of a blind, usually made of wood, metal or plastic. The width and length of the lamellae can be customized to suit the size and design of the window.
2. Rail: A component used to support and guide the sheet, usually fixed to the window frame. The design of the guide rail can affect the rotation and adjustment of the sheet.
3. Pull cord: A cord used to control the rotation angle of the sheet. Usually, the opening and closing of the blinds can be adjusted by pulling the pull cord.
4. Adjustment rod: A rod-like component used to manually operate the angle of the lamellae, usually installed on one side of the blinds.
5. Fixed bracket: A component used to fix the blinds, usually installed on the window frame to ensure the stability and safety of the blinds.
In general, the various components of the blinds work together to achieve effective control of light and ventilation, while also adding beauty and comfort to the indoor space. When choosing blinds, you can choose blinds of different materials and design styles according to your own needs and preferences to achieve the best decorative effect.
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