5 thoughts on “Where does gold get to test before you know the gold content?”
Marguerite
You can get the National Gold Diamond Quality Supervision and Inspection Center and the National Jewelry Quality Supervision and Inspection Center for testing. The National Jewelry Quality Supervision and Inspection Center is a national quality inspection institution authorized by the State Administration of Quality Supervision and Inspection and Quarantine in accordance with the law, and has been approved by the National Appraisal Committee by China. Revised national standards and industry standards. This data The national gold diamond product quality supervision and inspection center (NGDTC) is a national gold diamond quality inspection institution authorized by the State Administration of Quality Supervisionadory inspection in accordance with the law. The center accepts the quality supervision and inspection of gold jewelry and jade products issued by the state, and has a legal and third -party fair status. The center has passed the national measurement certification, review acceptance, and the recognition of the National Appraisal Committee of the Chinese Laboratory. The inspection capabilities cover all inspection items for precious metals and jewelry accessories. The center has inspection equipment such as infrared spectrometers, fluorescent spectrometers, plasma launch spectrometers such as the United States, Germany, and Japan. The center has a team of experienced and superb professional and technical personnel, with researchers, doctorates, national registered jewelry inspectors, and national registered jewelry appraisers and other professional and technical personnel. In centralized vocational skills training and appraisal work authorized by the Ministry of Labor and Social Security, there are "national precious metal jewelry, diamonds, treasure jade inspector professional skills appraisal stations" and "national jewelry and jade salesperson professional skills appraisal station "Waiting for training and appraisal institutions. Tens of thousands of businesses and marketing personnel have been trained for inspection institutions and gold jewelry companies. Reference materials Source: Baidu Encyclopedia-National Jewelry Quality Supervision and Inspection Center Reference materials Source: Baidu Encyclopedia-National Gold Diamond Product Quality Supervision and Inspection Center
You can get the National Gold Diamond Quality Supervision and Inspection Center and the National Jewelry Quality Supervision and Inspection Center for testing. In public information, the National Gold Diamond Product Quality Supervision and Inspection Center is a national gold diamond quality inspection institution authorized by the State Administration of Quality Supervision, Inspection and Quarantine in accordance with the law. In it is understood that the National Jewelry and Jade Quality Supervision and Inspection Center is a national jewelry and jade professional quality inspection institution authorized by relevant state competent departments in accordance with the law. It is the authority of Chinese jewelry and jade inspection. Market supervision and inspection, arbitration inspection, inspection of import and export goods, formulating and revising relevant national standards and many other tasks. The National Jewelry Quality Supervision and Inspection Center is a national quality inspection institution authorized by the State Administration of Quality Supervision and Inspection and Quarantine in accordance with the law, and has been approved by the National Appraisal Committee by China. Revised national standards and industry standards. Manaly provides commissioned inspection services to the society, and undertakes the supervision and inspection and arbitration inspection of government departments such as national quality supervision, industry and commerce, public security, and judicial departments. From the perspective of the test results, the standards adopted by the National Inspection and Inspection are more responsible for the test results. rn扩展资料：rn根据中华人民共和国国家标准，《首饰贵金属纯度的规定及命名方法》，黄金及其合金的纯度表示方法分为9K、14K、18K、22K、足金、 There are six types of thousands of kinds, but the reporter noticed that the 10,000 -footed gold jewelry purchased in Weifang was marked with the words Jin AU9999. does not have 10,000 -footed gold in our national standards, and now uses the 10,000 -foot gold standards formulated by enterprise standards. Now, Wanjujin is also actively discussed in our national standards. Although the state does not have the relevant regulations of Wanjin, there are also people in the industry in the industry that the gold content of Wanzu gold jewelry is higher, which represents higher technology and craftsmanship and should be affirmed. In from the industry, the purity of the gold content of sufficient gold is not less than 990, and the purity of the gold content of thousands of gold is not less than 999. The gold content of Wanjin has a higher purity of gold, which can reach 999.99.99. Reference materials Source: People's Daily-purchasing thousands of gold Chengcai needs to recognize the gold-cara gold content of gold. N
Are you detecting gold jewelry? If you test the purity, you must go to the local quality supervision bureau or the local formal large -scale pawn. If you just judge whether it is gold, I will give you a few tricks:
It simply introduce some identification methods. (1) See color: the higher the purity of the gold jewelry, the deeper the color. If there is no gold medal, you can determine the general color according to the following color (based on green gold. The so-called green gold contains only silver ingredients in gold); dark red yellow color is more than 95 %, light red yellow 90-95 % The pale yellow is 80-85 %, the cyan is 65-70 %, and the white light is only 50--60 % white light. The slightly yellow and white are less than 50 %. Generally, Qiqing, Eight Huang, and Jiu Chi can be used as a reference. ： weight: The proportion of gold is 19.32, which is more important than metal such as silver, copper, lead, zinc, aluminum. The volume of gold is more than 40 % heavier than the silver, 1.2 times heavier than copper, and 6.1 times heavier than aluminum. The gold jewelry should have a feeling of sinking in the hand, and the fake gold jewelry feels lightly. This method is not suitable for gold jewelry inlaid. (3) Look at the hardness: pure gold is soft and low. It can be used to draw light marks with nails. Teeth bite can leave dental marks. High -colored gold jewelry is low in color. It can also test hardness, pure gold is soft, easy to bend, the lower the purity, the less likely to bend. (4) Listening to the sound: Throwing the real gold with more than 99 % of the color will make a tap sound, there is no rhyme or elasticity. The fake or low golden sound is crispy but no dullness. Generally, the sound of "Dangdang" is emitted, and there are surplus sounds. (5) Burning with fire: The jewelry will be burned red (do not melt the jewelry) with the fire (do not melt the jewelry). After cooling, observe the color change. If the surface is still the original golden color is pure gold; It is not pure gold. Generally, the lower the color, the stronger the color, and the darkens are all, indicating that it is a fake gold jewelry. (6)看标记：国产黄金饰品都是按国际标准提纯配制成的，并打上戮记，如“24K”标明“足赤”或“足金”；18K金，标明“18K”字样，成色低Those who are in LOK can not play the K -printed number according to regulations. At present, illegal elements are commonly used to manufacture fake cards and imitation stamps in the society. They use rare gold, Asian gold, and even brass to impersonate real gold. Therefore, the identification of gold jewelry must be comprehensively determined according to the sample to determine the true and false and the quality of the real. There are two common methods for accurate identification of gold jewelry. (1)试金石法：选择质地细腻的黑色试金石，用含金量不等的标准试金片(对金牌)在试金石上划出痕迹，再将所要鉴定的金饰样品在同一试金石上划痕，滴上Remove the impurities of concentrated nitric acid, and find the traces left on the test gold stones compared with the traces of the tested samples, find the same color as the jewelry sample, and the standard degree of control of the sample gold is the accurate gold content of the gold jewelry sample to determine the gold jewelry sample Essence (2) Chemistry method: Also known as reagent test method. Gold is insoluble in separate nitric acid, sulfuric acid, and hydrochloric acid, and silver and copper ingredients can be dissolved with nitric acid. Take gold decorative sample. Putting nitric acid on a certain part, if gold will not change color, if it is silver products, it will generate silver oxide and turn black; For gold jewelry with a gold content of more than 95 %, test with nitric acid, the surface changes very small.
When buying gold jewelry, I want to know that the gold content is high or not, using these simple small methods
n00:00 / 01:1370% Shortcut Key Key Explanation: Play / Passing ESC: Exit full screen ↑: Increases 10% ↓: Relief of the volume 10% →: Single fast forward 5 seconds studio Here you can drag no longer appear in the player settings to reopen the small window shortcut key description
You can get the National Gold Diamond Quality Supervision and Inspection Center and the National Jewelry Quality Supervision and Inspection Center for testing.
The National Jewelry Quality Supervision and Inspection Center is a national quality inspection institution authorized by the State Administration of Quality Supervision and Inspection and Quarantine in accordance with the law, and has been approved by the National Appraisal Committee by China. Revised national standards and industry standards.
This data
The national gold diamond product quality supervision and inspection center (NGDTC) is a national gold diamond quality inspection institution authorized by the State Administration of Quality Supervisionadory inspection in accordance with the law. The center accepts the quality supervision and inspection of gold jewelry and jade products issued by the state, and has a legal and third -party fair status.
The center has passed the national measurement certification, review acceptance, and the recognition of the National Appraisal Committee of the Chinese Laboratory. The inspection capabilities cover all inspection items for precious metals and jewelry accessories.
The center has inspection equipment such as infrared spectrometers, fluorescent spectrometers, plasma launch spectrometers such as the United States, Germany, and Japan. The center has a team of experienced and superb professional and technical personnel, with researchers, doctorates, national registered jewelry inspectors, and national registered jewelry appraisers and other professional and technical personnel.
In centralized vocational skills training and appraisal work authorized by the Ministry of Labor and Social Security, there are "national precious metal jewelry, diamonds, treasure jade inspector professional skills appraisal stations" and "national jewelry and jade salesperson professional skills appraisal station "Waiting for training and appraisal institutions. Tens of thousands of businesses and marketing personnel have been trained for inspection institutions and gold jewelry companies.
Reference materials Source: Baidu Encyclopedia-National Jewelry Quality Supervision and Inspection Center
Reference materials Source: Baidu Encyclopedia-National Gold Diamond Product Quality Supervision and Inspection Center
You can get the National Gold Diamond Quality Supervision and Inspection Center and the National Jewelry Quality Supervision and Inspection Center for testing.
In public information, the National Gold Diamond Product Quality Supervision and Inspection Center is a national gold diamond quality inspection institution authorized by the State Administration of Quality Supervision, Inspection and Quarantine in accordance with the law.
In it is understood that the National Jewelry and Jade Quality Supervision and Inspection Center is a national jewelry and jade professional quality inspection institution authorized by relevant state competent departments in accordance with the law. It is the authority of Chinese jewelry and jade inspection. Market supervision and inspection, arbitration inspection, inspection of import and export goods, formulating and revising relevant national standards and many other tasks.
The National Jewelry Quality Supervision and Inspection Center is a national quality inspection institution authorized by the State Administration of Quality Supervision and Inspection and Quarantine in accordance with the law, and has been approved by the National Appraisal Committee by China. Revised national standards and industry standards.
Manaly provides commissioned inspection services to the society, and undertakes the supervision and inspection and arbitration inspection of government departments such as national quality supervision, industry and commerce, public security, and judicial departments. From the perspective of the test results, the standards adopted by the National Inspection and Inspection are more responsible for the test results. rn扩展资料：rn根据中华人民共和国国家标准，《首饰贵金属纯度的规定及命名方法》，黄金及其合金的纯度表示方法分为9K、14K、18K、22K、足金、 There are six types of thousands of kinds, but the reporter noticed that the 10,000 -footed gold jewelry purchased in Weifang was marked with the words Jin AU9999.
does not have 10,000 -footed gold in our national standards, and now uses the 10,000 -foot gold standards formulated by enterprise standards. Now, Wanjujin is also actively discussed in our national standards. Although the state does not have the relevant regulations of Wanjin, there are also people in the industry in the industry that the gold content of Wanzu gold jewelry is higher, which represents higher technology and craftsmanship and should be affirmed.
In from the industry, the purity of the gold content of sufficient gold is not less than 990, and the purity of the gold content of thousands of gold is not less than 999. The gold content of Wanjin has a higher purity of gold, which can reach 999.99.99.
Reference materials Source: People's Daily-purchasing thousands of gold Chengcai needs to recognize the gold-cara gold content of gold. N
Are you detecting gold jewelry? If you test the purity, you must go to the local quality supervision bureau or the local formal large -scale pawn. If you just judge whether it is gold, I will give you a few tricks:
It simply introduce some identification methods. (1) See color: the higher the purity of the gold jewelry, the deeper the color. If there is no gold medal, you can determine the general color according to the following color (based on green gold. The so-called green gold contains only silver ingredients in gold); dark red yellow color is more than 95 %, light red yellow 90-95 % The pale yellow is 80-85 %, the cyan is 65-70 %, and the white light is only 50--60 % white light. The slightly yellow and white are less than 50 %. Generally, Qiqing, Eight Huang, and Jiu Chi can be used as a reference.
： weight: The proportion of gold is 19.32, which is more important than metal such as silver, copper, lead, zinc, aluminum. The volume of gold is more than 40 % heavier than the silver, 1.2 times heavier than copper, and 6.1 times heavier than aluminum. The gold jewelry should have a feeling of sinking in the hand, and the fake gold jewelry feels lightly. This method is not suitable for gold jewelry inlaid. (3) Look at the hardness: pure gold is soft and low. It can be used to draw light marks with nails. Teeth bite can leave dental marks. High -colored gold jewelry is low in color. It can also test hardness, pure gold is soft, easy to bend, the lower the purity, the less likely to bend. (4) Listening to the sound: Throwing the real gold with more than 99 % of the color will make a tap sound, there is no rhyme or elasticity. The fake or low golden sound is crispy but no dullness. Generally, the sound of "Dangdang" is emitted, and there are surplus sounds. (5) Burning with fire: The jewelry will be burned red (do not melt the jewelry) with the fire (do not melt the jewelry). After cooling, observe the color change. If the surface is still the original golden color is pure gold; It is not pure gold. Generally, the lower the color, the stronger the color, and the darkens are all, indicating that it is a fake gold jewelry. (6)看标记：国产黄金饰品都是按国际标准提纯配制成的，并打上戮记，如“24K”标明“足赤”或“足金”；18K金，标明“18K”字样，成色低Those who are in LOK can not play the K -printed number according to regulations. At present, illegal elements are commonly used to manufacture fake cards and imitation stamps in the society. They use rare gold, Asian gold, and even brass to impersonate real gold. Therefore, the identification of gold jewelry must be comprehensively determined according to the sample to determine the true and false and the quality of the real. There are two common methods for accurate identification of gold jewelry. (1)试金石法：选择质地细腻的黑色试金石，用含金量不等的标准试金片(对金牌)在试金石上划出痕迹，再将所要鉴定的金饰样品在同一试金石上划痕，滴上Remove the impurities of concentrated nitric acid, and find the traces left on the test gold stones compared with the traces of the tested samples, find the same color as the jewelry sample, and the standard degree of control of the sample gold is the accurate gold content of the gold jewelry sample to determine the gold jewelry sample Essence (2) Chemistry method: Also known as reagent test method. Gold is insoluble in separate nitric acid, sulfuric acid, and hydrochloric acid, and silver and copper ingredients can be dissolved with nitric acid. Take gold decorative sample. Putting nitric acid on a certain part, if gold will not change color, if it is silver products, it will generate silver oxide and turn black; For gold jewelry with a gold content of more than 95 %, test with nitric acid, the surface changes very small.
When buying gold jewelry, I want to know that the gold content is high or not, using these simple small methods
n00:00 / 01:1370% Shortcut Key Key Explanation: Play / Passing ESC: Exit full screen ↑: Increases 10% ↓: Relief of the volume 10% →: Single fast forward 5 seconds studio Here you can drag no longer appear in the player settings to reopen the small window shortcut key description
Karamada