Supplier Page from Thermo Fisher Scientific for Tetranitro blue tetrazolium chloride, 97%
D-Mannitol, 98+% from Thermo Fisher Scientific
L(+)-Histidine methyl ester dihydrochloride, 97% from Thermo Fisher Scientific
L(+)-Lysine monohydrochloride, 99% from Thermo Fisher Scientific
L(+)-Prolinol, 95% from Thermo Fisher Scientific