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2. Fineness - Wikipedia

   en.wikipedia.org/wiki/Fineness

   24-carat gold is pure (while 100% purity is very difficult to attain, 24-carat as a designation is permitted in commerce for a minimum of 99.95% purity), 18-carat gold is 18 parts gold, 6 parts another metal (forming an alloy with 75% gold), 12-carat gold is 12 parts gold (12 parts another metal), and so forth. [20]

3. Karatmeter - Wikipedia

   en.wikipedia.org/wiki/Karatmeter

   Due to its very high precision and fast result, X-ray analysis has been adopted by international agencies in India as part of the certification process used to hallmark gold. [1] It is an accurate, non-destructive means of testing the purity of gold and other related elements. Analyzing gold using XRF spectrometers gives the purity of gold, up ...

4. Metallurgical assay - Wikipedia

   en.wikipedia.org/wiki/Metallurgical_assay

   A model of a late 19th-century Canadian seal used to certify the quality of assayed gold. A metallurgical assay is a compositional analysis of an ore, metal, or alloy, usually performed in order to test for purity or quality. Some assay methods are suitable for raw materials; others are more appropriate for finished goods.

5. How Much Is a Gold Bar Worth?

   www.aol.com/finance/much-gold-bar-worth...

   Bullion ranges in purity from 99.5% to 99.99% (also known as 9999 gold), and prices vary according current market prices for the particular purity and weight of the bullion you’re looking to ...

6. Nines (notation) - Wikipedia

   en.wikipedia.org/wiki/Nines_(notation)

   1 troy ounce of four nines fine gold (999.9) Nines are an informal logarithmic notation for proportions very near to one or, equivalently, percentages very near 100%. Put simply, "nines" are the number of consecutive nines in a percentage such as 99% (two nines) [1] or a decimal fraction such as 0.999 (three nines).

7. Gold bar - Wikipedia

   en.wikipedia.org/wiki/Gold_bar

   The standard gold bar held and traded internationally by central banks and bullion dealers is the Good Delivery bar with a 400 ozt (12.4 kg; 27.4 lb) nominal weight. However, its precise gold content is permitted to vary between 350 ozt (10.9 kg; 24.0 lb) and 430 ozt (13.4 kg; 29.5 lb). The minimum purity required is 99.5% gold.

8. Residual-resistance ratio - Wikipedia

   en.wikipedia.org/wiki/Residual-resistance_ratio

   Of course, 0 K can never be reached in practice so some estimation is usually made. Since the RRR can vary quite strongly for a single material depending on the amount of impurities and other crystallographic defects, it serves as a rough index of the purity and overall quality of a sample. Since resistivity usually increases as defect ...

9. Winter storm will not delay Trump election certification in ...

   www.aol.com/news/winter-storm-not-delay-trump...

   WASHINGTON (Reuters) -A massive winter storm moving across the United States will not keep the U.S. Congress from meeting on Monday to formally certify Republican Donald Trump's election as ...