This is a multielement solution that was prepared gravimetrically to contain the elements and concentrations stated below.

Zinc (Zn) 99.5-100.5 ppm
Aluminum (Al) 995-1005 ppm
Calcium (Ca) 2495-2505 ppm
Sodium (Na) 2495-2505 ppm
Potassium (K) 2495-2505 ppm
Magnesium (Mg) 2495-2505 ppm
Barium (Ba) 995-1005 ppm
Iron (Fe) 499.5-500.5 ppm
Chromium (Cr) 50.0-50.1 ppm
Vanadium (V) 249.5-250.5 ppm
Cobalt (Co) 249.5-250.5 ppm
Nickel (Ni) 199.5-200.5 ppm
Copper (Cu) 124.5-125.5 ppm
Manganese (Mn) 75.0-75.1 ppm
Silver (Ag) 49.9-50.0 ppm
Beryllium (Be) 25.0-25.1 ppm

The uncertainty associated with the certified values is ± 0.5% relative.

The concentrations are confirmed by ICP or ICP-MS.