Supplier Page from Thermo Fisher Scientific for Tungsten, plasma standard solution, Specpure:r, W 10,000µg/mL
Polystyrene standard, M.W. 3,350, Mw/Mn 1.10 from Thermo Fisher Scientific
Potassium hydrogen phthalate, ACS reagent, acidimetric standard from Thermo Fisher Scientific
Sulfur in Heavy Mineral Oil standard solution, Specpure:r, blank (0.0000%) from Thermo Fisher Scientific
Zinc, Oil based standard solution, Specpure:r, Zn 1000µmg/g from Thermo Fisher Scientific