Roxithromycin-d7, 1mg

Ethylene glycol mono(p-nonylphenyl) ether, mixture of isomers, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no.

Mass-Labelled PCDF Internal Standard Solution, 1.2ml, nonane

Chromium (Cr)