Supplier Page from Thermo Fisher Scientific for Sulfur in Diesel Fuel standard solution, Specpure:r, 20µmg/g (0.0020%)
Arsenic standard solution, for AAS, 1 µg/mL As in 2% KOH from Thermo Fisher Scientific
Copper standard solution, for AAS, 1 µg/mL Cu in 2 to 5% HNO3 from Thermo Fisher Scientific
Cyanide, standard solution, Specpure:r, CN:- 1000µg/mL from Thermo Fisher Scientific
Sodium, Oil based standard solution, Specpure:r, Na 1000µmg/g from Thermo Fisher Scientific