Supplier Page from Thermo Fisher Scientific for Chromium pieces, 3-8mm (0.1-0.31in), 99.99% (metals basis)
Ethanethiol, 99+% from Thermo Fisher Scientific
Ethyl bromopyruvate, 80-85% from Thermo Fisher Scientific
Ethylenediaminetetraacetic acid, 99%, pure from Thermo Fisher Scientific