含量
Assay

≥98%

镍(Ni)
Nickel

≤0.05%

铁(Fe)
Ferric

≤0.005%

锌(Zn)
Zinc

≤0.01%

铜(Cu)
Copper

≤0.005%

钠(Na)
Sodium

≤0.002%

水不溶物
Water insolubles

≤0.02%