Supplier Page from Thermo Fisher Scientific for Tungsten wire, 0.25mm (0.01in) dia, 99.95% (metals basis)
Dulcitol, 99+% from Thermo Fisher Scientific
Ethyl 2-mercaptoacetate, 99% from Thermo Fisher Scientific
Ethyl N-piperazinecarboxylate, 99% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific