Supplier Page from Thermo Fisher Scientific for Field's Stain A
L(+)-Glutamic acid monosodium salt monohydrate, 99% from Thermo Fisher Scientific
L(+)-Glutamine, 99% from Thermo Fisher Scientific
L(+)-Lysine monohydrochloride, 99% from Thermo Fisher Scientific
L-Alanine, 99% from Thermo Fisher Scientific