Supplier Page from Thermo Fisher Scientific for Hexavalent Chromium, standard solution, Specpure:r, Cr:+6 1000µg/mL
Ergosterol, 98% from Thermo Fisher Scientific
Esculin hydrate, 97% from Thermo Fisher Scientific
Ethoxymethylenemalononitrile, 98% from Thermo Fisher Scientific
Ethyl 4,4,4-trifluoroacetoacetate, 97% from Thermo Fisher Scientific