Supplier Page from Thermo Fisher Scientific for Chromium, AAS standard solution, Specpure:r, Cr 1000µg/mL
Gadolinium, AAS standard solution, Specpure:r, Gd 1000µg/mL from Thermo Fisher Scientific
Osmium, plasma standard solution, Specpure:r, Os 1000µg/mL from Thermo Fisher Scientific
Potassium, Oil based standard solution, Specpure:r, K 1000µmg/g from Thermo Fisher Scientific
Silicon standard solution, for AAS, 1 µg/mL Si in 2% NaOH from Thermo Fisher Scientific