This Korean Industrial Standard specifies the testing methods for determination of metallic elements (sodium, potassium, calcium, magnesium, copper, zinc, lead, cadmium, nickel, cobalt, manganese, chromium, aluminum, and iron) in highly purified water.
Remark These methods can be applied to the determination of metallic elements contained in very pure water, too, besides in highly purified water.
KS M 0073-1997 history
1997KS M 0073-1997 Test method for determination of metallic elements in high-purity water