Supplier Page from Thermo Fisher Scientific for Iodine, 0.1 N standard solution
Potassium standard solution, for AAS, 1 µg/mL K in 2-5% HNO3 from Thermo Fisher Scientific
Praseodymium, plasma standard solution, Specpure:r, Pr 1000µg/mL from Thermo Fisher Scientific
Rubidium, plasma standard solution, Specpure:r, Rb 1000µg/mL from Thermo Fisher Scientific
Tin(II) chloride dihydrate, low in Mercury, suitable for AAS from Thermo Fisher Scientific