Supplier Page from Thermo Fisher Scientific for Lead standard solution, for AAS, 1 µg/mL Pb in 2-5% HNO3
4-Ethylresorcinol, 98% from Thermo Fisher Scientific
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
meso-Erythritol, 99% from Thermo Fisher Scientific
N-Ethylaniline, 98% from Thermo Fisher Scientific