Supplier Page from Thermo Fisher Scientific for Cobalt standard solution, for AAS, 1 µg/mL Co in 2 to 5% HNO3
2-Ethylhexanoic acid, 99% from Thermo Fisher Scientific
Esculin hydrate, 97% from Thermo Fisher Scientific
Ethyl butyrylacetate, 98% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific