Supplier Page from Thermo Fisher Scientific for Rhodium, AAS standard solution, Specpure:r, Rh 1000µg/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
Polystyrene standard, M.W. 3,350, Mw/Mn 1.10 from Thermo Fisher Scientific
Potassium chloride, 0.117M, Conductivity Standard from Thermo Fisher Scientific