Supplier Page from Thermo Fisher Scientific for Potassium hydroxide, Acculute Standard Volumetric Solution, Final Concentration 0.5N
Copper, plasma standard solution, Specpure:r, Cu 1000µg/mL from Thermo Fisher Scientific
Rhenium, plasma standard solution, Specpure:r, Re 1000µg/mL from Thermo Fisher Scientific
Rubidium, plasma standard solution, Specpure:r, Rb 1000µg/mL from Thermo Fisher Scientific
Silicon standard solution, for AAS, 1 µg/mL Si in 2% NaOH from Thermo Fisher Scientific