Supplier Page from Thermo Fisher Scientific for Rhenium, plasma standard solution, Specpure:r, Re 1000µg/mL
Chromium, plasma standard solution, Specpure:r, Cr 10,000 µg/mL from Thermo Fisher Scientific
Iron standard solution, for AAS, 1 µg/mL Fe in 2 to 5% HNO3 from Thermo Fisher Scientific
Sodium, Oil based standard solution, Specpure:r, Na 1000µmg/g from Thermo Fisher Scientific
Sulfur in Crude Oil standard solution, Specpure:r, 40,000µmg/g (4.00%) from Thermo Fisher Scientific