Supplier Page from Thermo Fisher Scientific for Barium, plasma standard solution, Specpure:r, Ba 1000µg/mL
Neodymium, AAS standard solution, Specpure:r, Nd 1000µg/mL from Thermo Fisher Scientific
Rhenium, plasma standard solution, Specpure:r, Re 1000µg/mL from Thermo Fisher Scientific
Silicon standard solution, for AAS, 1 µg/mL Si in 2% NaOH from Thermo Fisher Scientific
Strontium, Natural Sr, plasma standard solution, Specpure:r, Natural Sr 100µg/mL from Thermo Fisher Scientific