Supplier Page from Thermo Fisher Scientific for Barium, Oil based standard solution, Specpure:r, Ba 5000µmg/g
Esculin hydrate, 97% from Thermo Fisher Scientific
Ethyl acrylate, 99.5%, stabilized from Thermo Fisher Scientific
Ethyl oxalyl chloride, 98% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific