2,4-Dihydroxybenzoic Acid, >95%, 500mg

2,2',3,4',5,5'-Hexachlorobiphenyl,100 µg/mL,isooctane,1mL,

Azithromycin-d5, 0,5mg

Perfluoro-7-methyloctanoic acid, 1.2ml x 50ug/ml, methanol