Supplier Page from Thermo Fisher Scientific for Hafnium, plasma standard solution, Specpure:r, Hf 10,000µg/mL
Nickel standard solution, for AAS, 1 µg/mL Ni in 2-5% HNO3 from Thermo Fisher Scientific
Sulfur in Crude Oil standard solution, Specpure:r, 40,000µmg/g (4.00%) from Thermo Fisher Scientific
Thallium, plasma standard solution, Specpure:r, Tl 1000µg/mL from Thermo Fisher Scientific
Zinc, plasma standard solution, Specpure:r, Zn 1000µg/mL from Thermo Fisher Scientific