니켈염

(Ni)，ω%                       ≥

22.2

(Co)，ω%                       ≤

0.050

(Cu)，ω%                       ≤        

0.0010

(Fe)，ω%                       ≤

0.0010

(Na)，ω%                       ≤

0.020

(Zn)，ω%                       ≤

0.0010

(Ca)，ω%                       ≤

0.010

(Mg)，ω%                      ≤

0.010

(Mn)，ω%                      ≤

0.0030

(Cd)，ω%                       ≤

0.0003

(Hg)，ω%                       ≤

0.0010

(Cr)，ω%                     ≤

0.0010

(Pb)，ω%                       ≤

0.0010

물이안물건이녹는다，ω%                     ≤

0.010