Supplier Page from Thermo Fisher Scientific for Holmium(III) acetate hydrate, REacton:r, 99.9% (REO)
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
3-Ethoxy-2-cyclohexen-1-one, 99% from Thermo Fisher Scientific
Ethylenediaminetetraacetic acid, 99%, pure from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific