Supplier Page from Thermo Fisher Scientific for Potassium, plasma standard solution, Specpure:r, K 10,000µg/mL
Copper standard solution, for AAS, 1 µg/mL Cu in 2 to 5% HNO3 from Thermo Fisher Scientific
Germanium, plasma standard solution, Specpure:r, Ge 1000µg/mL from Thermo Fisher Scientific
Iodide, Ion chromatography standard solution, Specpure:r, I:- 1000µg/mL from Thermo Fisher Scientific
Zinc, Oil based standard solution, Specpure:r, Zn 1000µmg/g from Thermo Fisher Scientific