4,4'-DDT, 100 µg/ml, Methanol, 1ml

Ibuprofen, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 15687-27-1

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

Ethylene glycol, 1000µg/ml in Water, 1ml