Gold is produced by processing the copper anode slime from copper electrolytic refinery.

Due to the unique affinage process, the gold has high quality.

Gold ingots are produced in grade rating of ZlA-1P, ZlA-1, ZlA-2 and ZlA-3.

Chemical composition of gold:

Grade	Fraction of total mass, %
	Au, not less	Impurity, not more, %
		Ag	Pt	Pd	Cu	Pb	Zn	Bi
ZlA-1P	99,99	0,005	0,0005	0,0005	0,0005	0,0005	0,0005	0,0005
ZlA-1	99,99	0,005	0,001	0,003	0,001	0,001	0,001	0,001
ZlA-2	99,98	0,015	0,005	0,005	0,005	0,005	0,001	0,001
ZlA-3	99,95	0,035	0,005	0,010	-	-	-	-

 

Grade	Fraction of total mass, %
	Impurity, not more, %
	Mn	Cr	Ni	Sb	Rh	Fe	Sn	Si	Mg	Total
ZlA-1P	0,0005	0,0005	0,0005	0,0005	0,0005	0,0005	0,0005	0,001	0,001	0,01
ZlA-1	0,0005	0,0005	0,0005	0,001	0,001	0,001	0,001	0,003	0,003	0,01
ZlA-2	0,0005	0,0005	0,0005	0,001	0,001	0,001	0,001	-	-	0,02
ZlA-3	-	-	-	-	0,002	-	-	-	-	0,05

Surface of each ingot is subject to inspection, marking and weighing. The bar weight should be within 11-13.3 kgs. The bars are produced in form of truncated pyramid. By customer orders it is allowed to produce another ingots in term of shape, weight and dimensions.