Supplier Page from Thermo Fisher Scientific for Iridium, plasma standard solution, Specpure:r, Ir 1000µg/mL
Iron standard solution, for AAS, 1 µg/mL Fe in 2 to 5% HNO3 from Thermo Fisher Scientific
Lithium, plasma standard solution, Specpure:r, Li 10,000µg/mL from Thermo Fisher Scientific
Sulfur in Heavy Mineral Oil standard solution, Specpure:r, 15µmg/g (0.0015%) from Thermo Fisher Scientific
Sulfur in Light Mineral Oil standard solution, Specpure:r, 300µmg/g (0.0300%) from Thermo Fisher Scientific