Gold
Brand and Chemical Constitution
Brand
Au-1
Au-2
Au-3
Gold Content(≡)
99.99
99.95
99.90
Impurity Content (≒)
Ag
0.005
0.020
〞
Cu
0.002
0.015
Fe
0.003
Pb
0.001
Bi
Sb
Impurity amount (≒)
0.01
0.05
0.10