Supplier Page from Thermo Fisher Scientific for Cobalt(II) nitrate hexahydrate, Puratronic:r, 99.999% (metals basis)
Esculin hydrate, 97% from Thermo Fisher Scientific
Ethyl carbazate, 97% from Thermo Fisher Scientific
Ethylenediamine, 99% from Thermo Fisher Scientific
Ethylenediaminetetraacetic acid, tetrasodium salt hydrate, 98%, pure from Thermo Fisher Scientific