Supplier Page from Thermo Fisher Scientific for Selenium standard solution, for AAS, 1 µg/mL Se in 10% HCl
2-Ethoxybenzamide, 97% from Thermo Fisher Scientific
2-Fluorobenzoic acid, 99% from Thermo Fisher Scientific
Ethyl N-piperazinecarboxylate, 99% from Thermo Fisher Scientific
Ethylenediaminetetraacetic acid, tetrasodium salt hydrate, 98%, pure from Thermo Fisher Scientific