delta-HCH, 100 µg/ml, Methanol, 5ml

Thiophenol

Mono-ethyl phthalate (ring-1,2-13C2,99%, dicarboxyl-13C2,99%) 100 µg/mL in MTBE

Sodium 1H,1H,2H,2H-perfluorodecane sulfonate (8:2), 50µg/ml in MeOH, 1,2ml