Supplier Page from Thermo Fisher Scientific for 1,3-Diphenylguanidine, primary standard, 99+%
Samarium, plasma standard solution, Specpure:r, Sm 10,000µg/mL from Thermo Fisher Scientific
Sulfur in Heavy Mineral Oil standard solution, Specpure:r, 15µmg/g (0.0015%) from Thermo Fisher Scientific
Tungsten, plasma standard solution, Specpure:r, W 1000µg/mL from Thermo Fisher Scientific
Viscosity standard, Specpure:r, nominally 100cSt @ 40° and 16.8cSt @ 100° from Thermo Fisher Scientific