Supplier Page from Thermo Fisher Scientific for Potassium bromide crystal optic disc, 25mm x 2mm, polished both sides
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
Dulcitol, 99+% from Thermo Fisher Scientific
Esculin hydrate, 97% from Thermo Fisher Scientific
Ethyl oxamate, 99% from Thermo Fisher Scientific