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Gold-Pure .999+
Gold samples that are 99.9% or higher purity. This includes 99.99%
and 99.999%. These purities are sometimes written as .999, .9999, and
.99999.
Gold-91.7% 22K balCu
Gold samples that are 91.7% gold with balance copper. These samples
are sometimes advertised as 91.67% gold or 22k gold. Balance copper
means that the other 8.33% in the sample is copper.
Gold-90% bal Cu
Gold samples that are 90% gold with balance copper. Balance copper
means that the other 10% in the sample is copper.
Gold-American Eagle
American Gold Eagles are 91.67% gold, 3% silver, and 5.33% copper. The
American Gold Eagle has a very specific alloy used only in this type of
coin. Even though American Gold Eagles have 1 ozt of gold in them, they
are actually 91.67% gold with silver and copper as the balance metals,
which is why they weigh more than 1 ozt in total.
Gold-Krugerrand
Gold Krugerrands are 91.67% gold and 8.33% copper. While this is
technically the same setting as the 91.7% 22K balCu setting, we added
a second option for ease of use because gold Krugerrands are very
popular on the market.
Gold-Britannia 90-12
Between 1990 and 2012, Gold Britannia coins were minted with a 91.7%
gold and 8.3% silver alloy. Gold Britannia coins in 1987-1989 used a
91.67% gold and 8.33% copper alloy and can be tested with 91.7% 22K
balCu setting. Gold Britannia coins from 2013 to present are minted as
99.99% pure gold and can be tested with the Pure .999+ setting.
Alloy Explanations
Gold
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Questions and answers
I've not used my model SM1501 for a couple of years and when you hit the power button the green light came on and then it turned right back off I then charged it over night and it did the same thing again why is this happening and how do I fix this problem