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

Silicon (Si) 99-101 ppm
Phosphorus (P) 99-101 ppm
Aluminum (Al) 19.8-20.2 ppm
Potassium (K) 99-101 ppm
Chromium (Cr) 19.8-20.2 ppm
Lithium (Li) 19.8-20.2 ppm
Boron (B) 19.8-20.2 ppm
Calcium (Ca) 19.8-20.2 ppm
Sodium (Na) 19.8-20.2 ppm
Molybdenum (Mo) 19.8-20.2 ppm
Barium (Ba) 19.8-20.2 ppm
Strontium (Sr) 19.8-20.2 ppm
Arsenic (As) 19.8-20.2 ppm
Antimony (Sb) 19.8-20.2 ppm
Selenium (Se) 19.8-20.2 ppm
Zinc (Zn) 19.8-20.2 ppm
Vanadium (V) 19.8-20.2 ppm
Copper (Cu) 19.8-20.2 ppm
Cobalt (Co) 19.8-20.2 ppm
Cadmium (Cd) 19.8-20.2 ppm

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

The concentrations are confirmed by ICP or ICP-MS.